Nume: Haruka Kaji
Ţara: Japonia
Data naşterii: 25.09.94, 31 Vârsta
Clasament WTA: 282
TOP poziţie în clasament: 213 (25.09.23, 33700 puncte)
Puncte: 249
Premii: 268992 $
Total meciuri: 608
Victorii: 339
Succes: 55.76 %
Ţara: Japonia
Data naşterii: 25.09.94, 31 Vârsta
Clasament WTA: 282
TOP poziţie în clasament: 213 (25.09.23, 33700 puncte)
Puncte: 249
Premii: 268992 $
Total meciuri: 608
Victorii: 339
Succes: 55.76 %
| an | sumar | Hard | Zgura | In. Hard | Carpet | Iarbă | Acryl |
| 2026 | 18/13 | 13/8 | 0/0 | 4/4 | 1/1 | 0/0 | 0/0 |
| 2025 | 29/32 | 26/24 | 2/6 | 1/2 | 0/0 | 0/0 | 0/0 |
| 2024 | 45/32 | 36/25 | 0/0 | 5/2 | 4/5 | 0/0 | 0/0 |
| 2023 | 41/28 | 24/19 | 4/2 | 2/2 | 4/3 | 7/2 | 0/0 |
| 2022 | 27/17 | 12/12 | 4/2 | 0/2 | 10/0 | 1/1 | 0/0 |
| 2021 | 8/12 | 6/9 | 2/3 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 4/3 | 4/2 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2019 | 24/29 | 17/22 | 1/2 | 5/2 | 1/3 | 0/0 | 0/0 |
| 2018 | 24/27 | 20/22 | 0/0 | 0/2 | 4/3 | 0/0 | 0/0 |
| 2017 | 55/20 | 48/16 | 0/0 | 3/1 | 4/3 | 0/0 | 0/0 |
| 2016 | 11/13 | 7/10 | 0/0 | 3/1 | 0/1 | 1/1 | 0/0 |
| 2015 | 18/10 | 13/7 | 2/2 | 0/0 | 3/1 | 0/0 | 0/0 |
| 2014 | 14/16 | 10/11 | 0/0 | 0/0 | 3/2 | 1/3 | 0/0 |
| 2013 | 16/11 | 13/8 | 0/0 | 0/0 | 1/1 | 2/2 | 0/0 |
| 2012 | 5/5 | 0/0 | 0/0 | 0/0 | 3/2 | 2/3 | 0/0 |
| 2011 | 0/1 | 0/0 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| ÎN TOTAL | 339/269 | 249/195 | 15/17 | 23/19 | 38/26 | 14/12 | 0/0 |
| succes % | 55.76 % | 56.08 % | 46.88 % | 54.76 % | 59.38 % | 53.85 % | 0 % |
Haruka Kaji / nejucate / ultimele
| nu a fost găsit nici un meci |
Haruka Kaji form / suprafaţa: Hard
Haruka Kaji / suprafaţa: Hard
| 23.05.26 | Semifinală | Valentina Ryser | Haruka Kaji | 6-3, 6-3 |  | detaliu meci |  W100 Takasaki | Hard |
| 22.05.26 | a 2-a rundă | Haruka Kaji | Fangran Tian | 6-0, 6-4 |  | detaliu meci | ||
| 22.05.26 | Sfert de finală | Haruka Kaji | Rina Saigo | 6-0, 6-4 | | detaliu meci | ||
| 20.05.26 | 1-a rundă | Haruka Kaji | Misaki Matsuda | 6-2, 7-61 | | detaliu meci | ||
| 06.05.26 | a 2-a rundă | Xinxin Yao | Haruka Kaji | 6-4, 6-3 | | detaliu meci |  Jiujiang | Hard |
| 05.05.26 | 1-a rundă | Haruka Kaji | Xinyu Gao | 7-62, 4-1, Xinyu Gao - retragere | | detaliu meci | ||
| 27.04.26 | 1-a rundă de calif. | Kurea Hayasaka | Haruka Kaji | 7-5, 6-4 | | detaliu meci | W100 Gifu | Hard |
| 23.04.26 | a 2-a rundă | Taylah Preston | Haruka Kaji | 6-3, 6-1 | | detaliu meci | W100 Tokyo | Hard |
| 22.04.26 | 1-a rundă | Haruka Kaji | Yeon Woo Ku | 6-4, 7-62 | | detaliu meci | ||
| 21.04.26 | Calificare | Haruka Kaji | Kristiana Sidorova | 5-7, 7-63, 7-5 | | detaliu meci | ||
| 20.04.26 | 1-a rundă de calif. | Haruka Kaji | Dalayna Hewitt | 6-1, 6-4 | | detaliu meci | ||
| 15.04.26 | 1-a rundă | Sae Noguchi | Haruka Kaji | 6-2, 6-3 | | detaliu meci | W35 Miyazaki | Hard |
| 11.04.26 | Semifinală | Hina Inoue | Haruka Kaji | 6-3, 6-3 | | detaliu meci | W35 Osaka | Hard |
| 10.04.26 | Sfert de finală | Haruka Kaji | Natsumi Kawaguchi | 7-63, 6-3 | | detaliu meci | ||
| 09.04.26 | a 2-a rundă | Haruka Kaji | Hikaru Sato | 6-76, 6-3, 6-3 | | detaliu meci | ||
| 08.04.26 | 1-a rundă | Haruka Kaji | Natsuki Yoshimoto | 3-6, 6-3, 6-3 | | detaliu meci | ||
| 29.03.26 | 1-a rundă de calif. | Priska Madelyn Nugroho | Haruka Kaji | 6-2, 6-0 | | detaliu meci | W100 Luan | Hard |
| 21.03.26 | Semifinală | Sofia Costoulas | Haruka Kaji | 6-1, 6-0 | | detaliu meci | W75 Kofu | Hard |
| 20.03.26 | Sfert de finală | Haruka Kaji | Nao Hibino | 0-6, 6-4, 6-3 | | detaliu meci | ||
| 19.03.26 | a 2-a rundă | Haruka Kaji | Sae Noguchi | 6-3, 6-3 | | detaliu meci | ||
| 18.03.26 | 1-a rundă | Haruka Kaji | Himeno Sakatsume | 3-6, 6-3, 7-5 | | detaliu meci | ||
| 25.11.25 | 1-a rundă | Darya Astakhova | Haruka Kaji | 6-1, 6-1 | | detaliu meci | W50 Yokohama | Hard |
| 19.11.25 | 1-a rundă | Shuai Zhang | Haruka Kaji | 6-4, 6-3 | | detaliu meci | W100 Takasaki | Hard |
| 14.11.25 | a 2-a rundă | Margaux Rouvroy | Haruka Kaji | 6-3, 7-62 | | detaliu meci |  W50 Funchal | Hard |
| 12.11.25 | 1-a rundă | Haruka Kaji | Madelief Hageman | 6-2, 6-1 | | detaliu meci | ||
| 06.11.25 | a 2-a rundă | Melisa Ercan | Haruka Kaji | 6-2, 6-4 | | detaliu meci | W35 Faro | Hard |
| 04.11.25 | 1-a rundă | Haruka Kaji | Lea Nilsson | 7-61, 6-1 | | detaliu meci | ||
| 26.10.25 | Calificare | Kristiana Sidorova | Haruka Kaji | 6-1, 6-2 | | detaliu meci |  Hong Kong | Hard |
| 25.10.25 | 1-a rundă de calif. | Haruka Kaji | Kallista Liu | 7-64, 6-4 | | detaliu meci | ||
| 15.10.25 | a 2-a rundă | Xinyu Gao | Haruka Kaji | 6-3, 6-3 | | detaliu meci | Jinan | Hard |
| 13.10.25 | 1-a rundă | Haruka Kaji | Yufei Ren | 4-6, 6-2, 7-5 | | detaliu meci | ||
| 10.10.25 | Sfert de finală | Carol Young Suh Lee | Haruka Kaji | 6-3, 2-6, 7-65 | | detaliu meci | W35 Kunshan | Hard |
| 09.10.25 | a 2-a rundă | Haruka Kaji | Katarina Zavatska | 7-62, 6-1 | | detaliu meci | ||
| 08.10.25 | 1-a rundă | Haruka Kaji | Ying Zhang | 7-64, 6-4 | | detaliu meci | ||
| 27.09.25 | Semifinală | Eunhye Lee | Haruka Kaji | 7-5, 6-1 | | detaliu meci |  W100 Incheon | Hard |
| 26.09.25 | Sfert de finală | Haruka Kaji | Miho Kuramochi | 6-4, 6-3 | | detaliu meci | ||
| 25.09.25 | a 2-a rundă | Haruka Kaji | Amy Zhu | 6-3, 6-4 | | detaliu meci | ||
| 23.09.25 | 1-a rundă | Haruka Kaji | Peangtarn Plipuech | 6-4, 7-64 | | detaliu meci | ||
| 02.09.25 | 1-a rundă | Katherine Sebov | Haruka Kaji | 6-3, 6-1 | | detaliu meci | W50 Leiria | Hard |
| 26.08.25 | 1-a rundă | Martyna Kubka | Haruka Kaji | 6-2, 3-6, 7-65 | | detaliu meci |  W35 Heraklion | Hard |
| 22.07.25 | 1-a rundă | Gabriela Andrea Knutson | Haruka Kaji | 2-6, 6-1, 6-0 | | detaliu meci | W100 Figueira | Hard |
| 15.07.25 | 1-a rundă | Vendula Valdmannova | Haruka Kaji | 6-4, 6-0 | | detaliu meci |  W50 Nottingham | Hard |
| 09.07.25 | 1-a rundă | Misaki Matsuda | Haruka Kaji | 7-5, 6-4 | | detaliu meci |  W35 Monastir | Hard |
| 30.04.25 | 1-a rundă | En Shuo Liang | Haruka Kaji | 5-7, 6-4, 6-3 | | detaliu meci | W100 Gifu | Hard |
| 24.04.25 | a 2-a rundă | Rebecca Marino | Haruka Kaji | 6-3, 6-4 | | detaliu meci | W100 Tokyo | Hard |
| 23.04.25 | 1-a rundă | Haruka Kaji | Yexin Ma | 6-2, 6-3 | | detaliu meci | ||
| 22.04.25 | Calificare | Haruka Kaji | Xiaodi You | 6-0, 7-66 | | detaliu meci | ||
| 21.04.25 | 1-a rundă de calif. | Haruka Kaji | Sakura Hosogi | 6-1, 7-67 | | detaliu meci | ||
| 19.04.25 | Semifinală | Polina Iatcenko | Haruka Kaji | 6-4, 6-2 | | detaliu meci |  W35 Sharm | Hard |
| 18.04.25 | Sfert de finală | Haruka Kaji | Isabella Shinikova | 4-6, 6-3, 6-4 | | detaliu meci | ||
| 17.04.25 | a 2-a rundă | Haruka Kaji | Angelica Blake | 6-1, 6-1 | | detaliu meci | ||
| 16.04.25 | 1-a rundă | Haruka Kaji | Yasmin Ezzat | 6-1, 6-2 | | detaliu meci | ||
| 11.04.25 | Sfert de finală | En Shuo Liang | Haruka Kaji | 6-1, 6-2 | | detaliu meci | W35 Osaka | Hard |
| 10.04.25 | a 2-a rundă | Haruka Kaji | Lin Zhu | 3-6, 6-2, 6-4 | | detaliu meci | ||
| 09.04.25 | 1-a rundă | Haruka Kaji | Sakura Hosogi | 6-1, 6-2 | | detaliu meci | ||
| 23.03.25 | Finală | Haruka Kaji | Himeno Sakatsume | 7-62, 6-3 | | detaliu meci | W50 Kofu | Hard |
| 22.03.25 | Semifinală | Haruka Kaji | Sara Saito | 5-7, 6-2, 6-3 | | detaliu meci | ||
| 21.03.25 | Sfert de finală | Haruka Kaji | Miho Kuramochi | 6-2, 6-1 | | detaliu meci | ||
| 20.03.25 | a 2-a rundă | Haruka Kaji | Haley Giavara | 6-2, 6-2 | | detaliu meci | ||
| 18.03.25 | 1-a rundă | Haruka Kaji | Natsuki Yoshimoto | 6-4, 6-2 | | detaliu meci | ||
| 07.03.25 | Sfert de finală | Ikumi Yamazaki | Haruka Kaji | 6-4, 5-7, 7-5 | | detaliu meci |  W35 Gurugram | Hard |
| 06.03.25 | a 2-a rundă | Haruka Kaji | Sohyun Park | 7-5, 6-1 | | detaliu meci | ||
| 04.03.25 | 1-a rundă | Haruka Kaji | Aditi Rawat | 6-2, 6-0 | | detaliu meci | ||
| 28.02.25 | Sfert de finală | Vaidehi Chaudhari | Haruka Kaji | 6-1, 7-65 | | detaliu meci | W50 Ahmedabad | Hard |
| 27.02.25 | a 3-a rundă | Haruka Kaji | Shrivalli Rashmikaa Bhamidipaty | 7-65, 6-4 | | detaliu meci | ||
| 26.02.25 | a 2-a rundă | Haruka Kaji | Vaishnavi Adkar | 6-0, 6-2 | | detaliu meci | ||
| 19.02.25 | 1-a rundă | Hanyu Guo | Haruka Kaji | 6-1, 6-2 | | detaliu meci |  W35 Burnie | Hard |
| 05.02.25 | 1-a rundă | Maddison Inglis | Haruka Kaji | 7-5, 6-3 | | detaliu meci | W75 Brisbane | Hard |
| 29.01.25 | 1-a rundă | Claire Liu | Haruka Kaji | 6-4, 6-0 | | detaliu meci | W75 Brisbane | Hard |
| 04.01.25 | 1-a rundă de calif. | Renata Zarazua | Haruka Kaji | 6-1, 7-65 | | detaliu meci | Hobart | Hard |
| 28.12.24 | 1-a rundă de calif. | Lucrezia Stefanini | Haruka Kaji | 6-1, 6-3 | | detaliu meci |  Auckland | Hard |
| 29.11.24 | Semifinală | Hina Inoue | Haruka Kaji | 7-65, 6-1 | | detaliu meci | W50 Yokohama | Hard |
| 28.11.24 | Sfert de finală | Haruka Kaji | Natsumi Kawaguchi | 6-1, 6-2 | | detaliu meci | ||
| 27.11.24 | a 2-a rundă | Haruka Kaji | Shiho Akita | 6-2, 6-3 | | detaliu meci | ||
| 26.11.24 | 1-a rundă | Haruka Kaji | Naho Sato | 6-2, 6-4 | | detaliu meci | ||
| 22.11.24 | Sfert de finală | Priska Madelyn Nugroho | Haruka Kaji | 6-2, 7-65 | | detaliu meci | W100 Takasaki | Hard |
| 22.11.24 | a 2-a rundă | Haruka Kaji | Momoko Kobori | 6-4, 6-1 | | detaliu meci | ||
| 21.11.24 | 1-a rundă | Haruka Kaji | Su Jeong Jang | 6-3, 6-3 | | detaliu meci | ||
| 16.11.24 | Semifinală | Malaika Rapolu | Haruka Kaji | 2-6, 6-4, 6-0 | | detaliu meci |  W50 Austin | Hard |
| 15.11.24 | Sfert de finală | Haruka Kaji | Sophie Chang | 6-1, 6-1 | | detaliu meci | ||
| 14.11.24 | a 2-a rundă | Haruka Kaji | Jasmijn Gimbrere | 5-7, 7-5, 6-3 | | detaliu meci | ||
| 13.11.24 | 1-a rundă | Haruka Kaji | Ekaterina Makarova (1996) | 2-6, 6-1, 7-5 | | detaliu meci | ||
| 19.10.24 | 1-a rundă de calif. | Mei Yamaguchi | Haruka Kaji | 6-3, 6-3 | | detaliu meci | Tokyo | Hard |
| 02.10.24 | 1-a rundă | Alana Parnaby | Haruka Kaji | 6-3, 6-2 | | detaliu meci | W35 Cairns | Hard |
| 14.09.24 | 1-a rundă de calif. | Yeon Woo Ku | Haruka Kaji | 0-6, 6-3, 6-2 | | detaliu meci | Seoul | Hard |
| 05.09.24 | a 2-a rundă | Xinyu Gao | Haruka Kaji | 6-1, 6-4 | | detaliu meci | W100 Incheon | Hard |
| 03.09.24 | 1-a rundă | Haruka Kaji | Carol Zhao | 6-3, 6-4 | | detaliu meci | ||
| 21.08.24 | 1-a rundă | Tessah Andrianjafitrimo | Haruka Kaji | 6-3, 6-2 | | detaliu meci |  W35 Vigo | Hard |
| 18.08.24 | Finală | Alina Charaeva | Haruka Kaji | 7-67, 6-1 | | detaliu meci | W50 Ourense | Hard |
| 17.08.24 | Semifinală | Haruka Kaji | Malene Helgo | 6-1, 6-1 | | detaliu meci | ||
| 16.08.24 | Sfert de finală | Haruka Kaji | Martyna Kubka | 6-1, 6-1 | | detaliu meci | ||
| 15.08.24 | a 2-a rundă | Haruka Kaji | Misaki Matsuda | 6-3, 6-0 | | detaliu meci | ||
| 14.08.24 | 1-a rundă | Haruka Kaji | Madhurima Sawant | 6-1, 6-0 | | detaliu meci | ||
| 11.08.24 | Finală | Sonay Kartal | Haruka Kaji | 6-3, 6-3 | | detaliu meci | W35 Roehampton | Hard |
| 10.08.24 | Semifinală | Haruka Kaji | Saki Imamura | 7-65, 6-2 | | detaliu meci | ||
| 09.08.24 | Sfert de finală | Haruka Kaji | Ella Mcdonald | 4-6, 7-65, 6-0 | | detaliu meci | ||
| 08.08.24 | a 2-a rundă | Haruka Kaji | Rina Saigo | 2-6, 6-2, 6-1 | | detaliu meci | ||
| 06.08.24 | 1-a rundă | Haruka Kaji | Brooke Black | 7-5, 6-1 | | detaliu meci | ||
| 30.07.24 | 1-a rundă | Yeon Woo Ku | Haruka Kaji | 6-3, 6-2 | | detaliu meci | W35 Roehampton | Hard |
| 25.07.24 | Sfert de finală | Yasmine Mansouri | Haruka Kaji | 7-5, 6-3 | | detaliu meci | W35 Segovia | Hard |
| 24.07.24 | a 2-a rundă | Haruka Kaji | Radka Zelnickova | 6-4, 6-2 | | detaliu meci | ||
| 23.07.24 | 1-a rundă | Haruka Kaji | Raquel Gonzalez Vilar | 6-1, 6-3 | | detaliu meci | ||
| 06.07.24 | Semifinală | Xinxin Yao | Haruka Kaji | 3-6, 6-3, 6-3 | | detaliu meci | W35 Hong | Hard |
| 05.07.24 | Sfert de finală | Haruka Kaji | Hiromi Abe | 6-0, 6-1 | | detaliu meci | ||
| 04.07.24 | a 2-a rundă | Haruka Kaji | Anastasia Zolotareva | 6-3, 6-3 | | detaliu meci | ||
| 03.07.24 | 1-a rundă | Haruka Kaji | Gabriella Da Silva Fick | 6-1, 5-7, 6-2 | | detaliu meci | ||
| 05.06.24 | 1-a rundă | Vaidehi Chaudhari | Haruka Kaji | 6-1, 6-3 | | detaliu meci | W35 Daegu | Hard |
| 31.05.24 | Sfert de finală | Kyoka Okamura | Haruka Kaji | 6-1, 6-4 | | detaliu meci | W35 Changwon | Hard |
| 30.05.24 | a 2-a rundă | Haruka Kaji | Yeon Woo Ku | 2-6, 6-3, 6-3 | | detaliu meci | ||
| 28.05.24 | 1-a rundă | Haruka Kaji | Natsumi Kawaguchi | 6-2, 6-4 | | detaliu meci | ||
| 25.05.24 | Semifinală | Aoi Ito | Haruka Kaji | 3-6, 6-3, 6-0 | | detaliu meci | W50 Goyang | Hard |
| 24.05.24 | Sfert de finală | Haruka Kaji | Hina Inoue | 7-66, 6-2 | | detaliu meci | ||
| 23.05.24 | a 2-a rundă | Haruka Kaji | Miho Kuramochi | 6-2, 4-6, 6-1 | | detaliu meci | ||
| 21.05.24 | 1-a rundă | Haruka Kaji | Chengyiyi Yuan | 6-3, 6-2 | | detaliu meci | ||
| 02.05.24 | a 2-a rundă | Mai Hontama | Haruka Kaji | 4-6, 7-5, 6-3 | | detaliu meci | W100 Gifu | Hard |
| 30.04.24 | 1-a rundă | Haruka Kaji | Mananchaya Sawangkaew | 6-1, 3-6, 6-3 | | detaliu meci | ||
| 24.04.24 | 1-a rundă | Kimberly Birrell | Haruka Kaji | 1-6, 6-3, 6-2 | | detaliu meci | W100 Tokyo | Hard |
| 12.04.24 | Sfert de finală | Destanee Aiava | Haruka Kaji | 6-1, 6-4 | | detaliu meci | W35 Osaka | Hard |
| 11.04.24 | a 2-a rundă | Haruka Kaji | Ayano Shimizu | 6-72, 7-5, 6-4 | | detaliu meci | ||
| 10.04.24 | 1-a rundă | Haruka Kaji | Eri Shimizu | 7-613, 6-3 | | detaliu meci | ||
| 02.04.24 | 1-a rundă | Arianne Hartono | Haruka Kaji | 6-4, 6-4 | | detaliu meci | W50 Kashiwa | Hard |
| 29.03.24 | Sfert de finală | Catherine Harrison | Haruka Kaji | 4-6, 6-4, 7-5 | | detaliu meci | W50 Kofu | Hard |
| 28.03.24 | a 2-a rundă | Haruka Kaji | Priscilla Hon | 6-3, 6-1 | | detaliu meci | ||
| 27.03.24 | 1-a rundă | Haruka Kaji | Rina Saigo | 7-63, 6-2 | | detaliu meci | ||
| 09.02.24 | Sfert de finală | Sijia Wei | Haruka Kaji | 6-3, 6-4 | | detaliu meci | W75 Burnie | Hard |
| 08.02.24 | a 2-a rundă | Haruka Kaji | Priscilla Hon | 3-6, 6-3, 6-3 | | detaliu meci | ||
| 07.02.24 | 1-a rundă | Haruka Kaji | Erika Sema | 6-1, 6-3 | | detaliu meci | ||
| 31.01.24 | 1-a rundă | Maya Joint | Haruka Kaji | 6-1, 7-64 | | detaliu meci | W75 Burnie | Hard |
| 11.01.24 | a 2-a rundă | Sara Saito | Haruka Kaji | 7-5, 3-6, 5-0, Haruka Kaji - retragere | | detaliu meci |  W50 Nonthaburi | Hard |
| 09.01.24 | 1-a rundă | Haruka Kaji | Thasaporn Naklo | 7-5, 6-1 | | detaliu meci | ||
| 04.01.24 | a 2-a rundă | Punnin Kovapitukted | Haruka Kaji | 6-0, 6-4 | | detaliu meci | W50 Nonthaburi | Hard |
| 02.01.24 | 1-a rundă | Haruka Kaji | Ena Koike | 6-3, 6-0 | | detaliu meci | ||
| 29.11.23 | a 2-a rundă | Suzan Lamens | Haruka Kaji | 7-5, 6-78, 6-1 | | detaliu meci | W40 Yokohama | Hard |
| 28.11.23 | 1-a rundă | Haruka Kaji | Karen Tsutsumi | 6-0, 6-3 | | detaliu meci | ||
| 22.11.23 | 1-a rundă | Aoi Ito | Haruka Kaji | 7-63, 6-2 | | detaliu meci | W100 Takasaki | Hard |
| 21.11.23 | Calificare | Haruka Kaji | Rina Saigo | 6-3, 6-74, 6-3 | | detaliu meci | ||
| 20.11.23 | 1-a rundă de calif. | Haruka Kaji | Xinxin Yao | 6-0, 6-4 | | detaliu meci | ||
| 16.11.23 | a 2-a rundă | Harriet Dart | Haruka Kaji | 6-4, 6-3 | | detaliu meci | W100 Takasaki | Hard |
| 14.11.23 | 1-a rundă | Haruka Kaji | Yafan Wang | 6-3, 6-4 | | detaliu meci | ||
| 10.09.23 | Calificare | Elizabeth Mandlik | Haruka Kaji | 6-1, 6-2 | | detaliu meci | Osaka | Hard |
| 09.09.23 | 1-a rundă de calif. | Haruka Kaji | Kyoka Okamura | 6-4, 4-6, 6-2 | | detaliu meci | ||
| 06.09.23 | a 2-a rundă | Kateryna Volodko | Haruka Kaji | 6-4, 6-2 | | detaliu meci | W100 Tokyo | Hard |
| 05.09.23 | 1-a rundă | Haruka Kaji | Yue Yuan | 4-6, 6-2, 6-3 | | detaliu meci | ||
| 25.08.23 | 2-a rundă de calif. | Kaja Juvan | Haruka Kaji | 6-3, 4-6, 6-2 | | detaliu meci | New York | Hard |
| 23.08.23 | 1-a rundă de calif. | Haruka Kaji | Valentini Grammatikopoulou | 6-3, 6-3 | | detaliu meci | ||
| 27.07.23 | a 2-a rundă | Alina Korneeva | Haruka Kaji | 6-1, 6-1 | | detaliu meci | W100 Figueira | Hard |
| 25.07.23 | 1-a rundă | Haruka Kaji | Anastasia Tikhonova | 6-2, 0-6, 6-4 | | detaliu meci | ||
| 20.07.23 | a 3-a rundă | Isabella Shinikova | Haruka Kaji | 6-3, 6-2 | | detaliu meci | W40 Porto | Hard |
| 19.07.23 | a 2-a rundă | Haruka Kaji | Momoko Kobori | 6-1, 6-3 | | detaliu meci | ||
| 07.07.23 | Sfert de finală | Yexin Ma | Haruka Kaji | 6-2, 6-2 | | detaliu meci | W40 Hong | Hard |
| 06.07.23 | a 2-a rundă | Haruka Kaji | Ho Ching Wu | 6-4, Ho Ching Wu - retragere | | detaliu meci | ||
| 05.07.23 | 1-a rundă | Haruka Kaji | Yuka Hosoki | 6-0, 6-2 | | detaliu meci | ||
| 01.07.23 | Semifinală | Ya-Yi Yang | Haruka Kaji | 4-6, 6-4, 6-1 | | detaliu meci | W25 Hong | Hard |
| 30.06.23 | Sfert de finală | Haruka Kaji | Aoi Ito | 7-62, 3-6, 6-4 | | detaliu meci | ||
| 29.06.23 | a 2-a rundă | Haruka Kaji | Momoko Kobori | 6-2, 6-4 | | detaliu meci | ||
| 28.06.23 | 1-a rundă | Haruka Kaji | Ho Ching Wu | 2-6, 6-4, 6-1 | | detaliu meci | ||
| 01.06.23 | a 2-a rundă | Erika Sema | Haruka Kaji | 6-4, 6-0 | | detaliu meci | W25 Tokyo | Hard |
| 31.05.23 | 1-a rundă | Haruka Kaji | Mei Yamaguchi | 7-64, 6-0 | | detaliu meci | ||
| 05.05.23 | Sfert de finală | Himeno Sakatsume | Haruka Kaji | 2-6, 6-1, 6-1 | | detaliu meci | W80 Gifu | Hard |
| 04.05.23 | a 2-a rundă | Haruka Kaji | Na-Lae Han | 6-3, 3-6, 7-65 | | detaliu meci | ||
| 03.05.23 | 1-a rundă | Haruka Kaji | Kyoka Okamura | 6-2, 6-4 | | detaliu meci | ||
| 14.04.23 | Sfert de finală | Na-Lae Han | Haruka Kaji | 6-1, 6-3 | | detaliu meci | W25 Osaka | Hard |
| 13.04.23 | a 2-a rundă | Haruka Kaji | Erika Sema | 6-3, 5-7, 7-65 | | detaliu meci | ||
| 11.04.23 | 1-a rundă | Haruka Kaji | Sara Saito | 6-0, 6-3 | | detaliu meci | ||
| 04.04.23 | 1-a rundă | Nao Hibino | Haruka Kaji | 6-2, 6-3 | | detaliu meci | W25 Kashiwa | Hard |
| 31.03.23 | Sfert de finală | Su Jeong Jang | Haruka Kaji | 6-1, 6-4 | | detaliu meci | W25 Kofu | Hard |
| 30.03.23 | a 2-a rundă | Haruka Kaji | Petra Hule | 6-3, 3-6, 6-3 | | detaliu meci | ||
| 29.03.23 | 1-a rundă | Haruka Kaji | Katarina Kozarov | 7-65, 6-3 | | detaliu meci | ||
| 09.02.23 | a 2-a rundă | Alexandra Bozovic | Haruka Kaji | 6-1, 6-4 | | detaliu meci | W25 Burnie | Hard |
| 07.02.23 | 1-a rundă | Haruka Kaji | Yexin Ma | 6-2, 6-1 | | detaliu meci | ||
| 28.01.23 | 1-a rundă de calif. | Ipek Oz | Haruka Kaji | 6-3, 6-0 | | detaliu meci | Hua Hin | Hard |
| 13.01.23 | Sfert de finală | Anastasia Kulikova | Haruka Kaji | 7-5, 7-5 | | detaliu meci | W40 Nonthaburi | Hard |
| 12.01.23 | a 2-a rundă | Haruka Kaji | Ankita Raina | 7-5, 6-3 | | detaliu meci | ||
| 11.01.23 | 1-a rundă | Haruka Kaji | Haruna Arakawa | 4-6, 7-65, 6-2 | | detaliu meci | ||
| 04.01.23 | 1-a rundă | Zongyu Li | Haruka Kaji | 6-2, 4-6, 6-1 | | detaliu meci | W40 Nonthaburi | Hard |
| 08.11.22 | 1-a rundă | Himari Sato | Haruka Kaji | 6-3, 6-3 | | detaliu meci | W25 Yokohama | Hard |
| 06.09.22 | Calificare | Haruka Kaji | Erika Sema | 6-2, 6-4 | | detaliu meci | W25 Santarem | Hard |
| 06.09.22 | 1-a rundă | Isabella Kruger | Haruka Kaji | 6-3, 6-0 | | detaliu meci | ||
| 05.09.22 | 1-a rundă de calif. | Haruka Kaji | Milla Sequeira | 6-2, 6-0 | | detaliu meci | ||
| 26.08.22 | Sfert de finală | Joanna Garland | Haruka Kaji | 6-2, 6-1 | | detaliu meci | W25 Roehampton | Hard |
| 25.08.22 | a 2-a rundă | Haruka Kaji | Eliz Maloney | 7-5, 6-72, 6-2 | | detaliu meci | ||
| 24.08.22 | 1-a rundă | Haruka Kaji | Sarah Beth Grey | 6-4, 6-1 | | detaliu meci | ||
| 22.08.22 | Calificare | Haruka Kaji | Humera Baharmus | 6-3, 6-3 | | detaliu meci | ||
| 21.08.22 | 1-a rundă de calif. | Haruka Kaji | Adeola Greatorex | 6-3, 6-0 | | detaliu meci | ||
| 20.08.22 | Semifinală | Ankita Raina | Haruka Kaji | 6-75, 7-5, 6-0 | | detaliu meci | W25 Aldershot | Hard |
| 19.08.22 | Sfert de finală | Haruka Kaji | Amarni Banks | 6-2, 6-2 | | detaliu meci | ||
| 18.08.22 | a 2-a rundă | Haruka Kaji | Diana Marcinkevica | 7-5, 6-3 | | detaliu meci | ||
| 16.08.22 | 1-a rundă | Haruka Kaji | Francesca Davis | 6-0, 6-2 | | detaliu meci | ||
| 03.08.22 | a 2-a rundă | Lucrezia Stefanini | Haruka Kaji | 6-4, 7-5 | | detaliu meci | W25 Foxhills | Hard |
| 02.08.22 | 1-a rundă | Haruka Kaji | Hibah Shaikh | 6-3, 6-4 | | detaliu meci | ||
| 27.07.22 | a 2-a rundă | Amarni Banks | Haruka Kaji | 7-5, 7-5 | | detaliu meci | W25 Nottingham | Hard |
| 26.07.22 | 1-a rundă | Haruka Kaji | Rutuja Bhosale | 6-4, 6-4 | | detaliu meci | ||
| 20.07.22 | 1-a rundă | Francisca Jorge | Haruka Kaji | 6-3, 6-1 | | detaliu meci | W25+H Figueira | Hard |
| 12.07.22 | 1-a rundă | Alicia Dudeney | Haruka Kaji | 6-3, 6-2 | | detaliu meci | W25 Roehampton | Hard |
| 07.06.22 | 1-a rundă | Karman Kaur Thandi | Haruka Kaji | 6-4, 4-6, 6-1 | | detaliu meci | W25 Chiang | Hard |
| 02.06.22 | a 2-a rundă | Xinyu Gao | Haruka Kaji | 6-3, 6-1 | | detaliu meci | W25 Chiang | Hard |
| 01.06.22 | 1-a rundă | Haruka Kaji | Anastasiya Poplavska | 6-4, 6-1 | | detaliu meci | ||
| 12.04.22 | 1-a rundă | Maria Timofeeva | Haruka Kaji | 7-5, 3-6, 6-2 | | detaliu meci | W25 Chiang | Hard |
| 06.04.22 | 1-a rundă | Chihiro Muramatsu | Haruka Kaji | 6-4, 6-3 | | detaliu meci | W25 Chiang | Hard |
| 06.10.21 | 1-a rundă | Connie Ma | Haruka Kaji | 6-1, 6-1 | | detaliu meci | W25 Redding | Hard |
| 29.09.21 | 1-a rundă | Victoria Duval | Haruka Kaji | 6-2, 6-1 | | detaliu meci | W60 Berkeley | Hard |
| 28.09.21 | Calificare | Haruka Kaji | Tori Kinard | 2-6, 6-4, 10-6 | | detaliu meci | ||
| 21.09.21 | 1-a rundă | Emma Navarro | Haruka Kaji | 6-3, 6-0 | | detaliu meci | W25 Fort | Hard |
| 26.08.21 | a 2-a rundă | Ya-Hsuan Lee | Haruka Kaji | 6-2, 6-4 | | detaliu meci | W25 Vigo | Hard |
| 25.08.21 | 1-a rundă | Haruka Kaji | Ekaterina Yashina | 6-1, 6-3 | | detaliu meci | ||
| 18.08.21 | 1-a rundă | Conny Perrin | Haruka Kaji | 7-65, 6-0 | | detaliu meci | W25 Ourense | Hard |
| 23.07.21 | Sfert de finală | Leolia Jeanjean | Haruka Kaji | 7-65, 6-2 | | detaliu meci |  W25 Les | Hard |
| 22.07.21 | a 2-a rundă | Haruka Kaji | Olivia Gadecki | 6-4, 2-6, 6-4 | | detaliu meci | ||
| 20.07.21 | 1-a rundă | Haruka Kaji | Chiara Scholl | 6-4, 1-0, Chiara Scholl - retragere | | detaliu meci | ||
| 13.07.21 | 1-a rundă | Mai Hontama | Haruka Kaji | 6-2, 6-0 | | detaliu meci | W60 Vitoria | Hard |
| 09.07.21 | Sfert de finală | Olivia Gadecki | Haruka Kaji | 6-2, 6-3 | | detaliu meci | W25 Lisbon | Hard |
| 07.07.21 | a 2-a rundă | Haruka Kaji | Anastasia Zakharova | 7-5, 6-3 | | detaliu meci | ||
| 05.07.21 | 1-a rundă | Haruka Kaji | Haruna Arakawa | 6-2, 6-3 | | detaliu meci | ||
| 30.06.21 | 1-a rundă | Giulia Gatto-Monticone | Haruka Kaji | 6-3, 6-3 | | detaliu meci | W25 Palma | Hard |
| 07.03.20 | Semifinală | Yuriko Miyazaki | Haruka Kaji | 4-6, 6-4, 6-1 | | detaliu meci | W25 Yokohama | Hard |
| 05.03.20 | Sfert de finală | Haruka Kaji | Shiho Akita | 4-6, 7-60, 6-0 | | detaliu meci | ||
| 04.03.20 | a 2-a rundă | Haruka Kaji | Moyuka Uchijima | 6-4, 6-2 | | detaliu meci | ||
| 03.03.20 | 1-a rundă | Haruka Kaji | Fang Ying Xun | 6-2, 3-6, 7-5 | | detaliu meci | ||
| 09.01.20 | a 2-a rundă | Fang Ying Xun | Haruka Kaji | 3-6, 6-2, 6-2 | | detaliu meci | W25 Hong | Hard |
| 08.01.20 | 1-a rundă | Haruka Kaji | Miyabi Inoue | 6-4, 6-1 | | detaliu meci | ||
| 01.01.20 | 1-a rundă | Ekaterine Gorgodze | Haruka Kaji | 7-65, 6-3 | | detaliu meci | W25 Hong | Hard |
| 13.11.19 | 1-a rundă | Ayumi Morita | Haruka Kaji | 6-1, 6-2 | | detaliu meci | W100 Tokyo | Hard |
| 14.10.19 | 1-a rundă de calif. | Jiaxi Lu | Haruka Kaji | 6-2, 6-2 | | detaliu meci | W100 Suzhou | Hard |
| 05.10.19 | 1-a rundă de calif. | Arina Rodionova | Haruka Kaji | 3-6, 6-1, 6-2 | | detaliu meci | Tianjin | Hard |
| 01.10.19 | 1-a rundă | Risa Ozaki | Haruka Kaji | 4-6, 7-64, 6-4 | | detaliu meci | W25 Brisbane | Hard |
| 24.08.19 | Finală | Akiko Omae | Haruka Kaji | 3-6, 7-65, 6-3 | | detaliu meci | W25 Tsukuba | Hard |
| 24.08.19 | Semifinală | Haruka Kaji | Momoko Kobori | 0-6, 7-65, 6-2 | | detaliu meci | ||
| 23.08.19 | Sfert de finală | Haruka Kaji | Naho Sato | 6-2, 6-3 | | detaliu meci | ||
| 22.08.19 | a 2-a rundă | Haruka Kaji | Himari Sato | 6-3, 6-2 | | detaliu meci | ||
| 21.08.19 | 1-a rundă | Haruka Kaji | Tori Kinard | 6-4, 6-4 | | detaliu meci | ||
| 01.08.19 | a 2-a rundă | Lisa-Marie Rioux | Haruka Kaji | 6-4, 6-1 | | detaliu meci | .png){kind=small} W25 Taipei | Hard |
| 31.07.19 | 1-a rundă | Haruka Kaji | Erina Hayashi | 6-4, 6-2 | | detaliu meci | ||
| 23.07.19 | 1-a rundă | Katherine Sebov | Haruka Kaji | 7-5, 6-3 | | detaliu meci |  W80 Granby | Hard |
| 17.07.19 | 1-a rundă | Leylah Annie Fernandez | Haruka Kaji | 6-3, 6-1 | | detaliu meci | W25 Gatineau | Hard |
| 13.07.19 | Semifinală | Maddison Inglis | Haruka Kaji | 3-6, 7-67, 6-2 | | detaliu meci | W25 Saskatoon | Hard |
| 12.07.19 | Sfert de finală | Haruka Kaji | Madison Westby | 6-3, 6-4 | | detaliu meci | ||
| 11.07.19 | a 2-a rundă | Haruka Kaji | Ariana Arseneault | 6-3, 6-1 | | detaliu meci | ||
| 09.07.19 | 1-a rundă | Haruka Kaji | Alexandra Riley | 6-1, 6-2 | | detaliu meci | ||
| 19.06.19 | 1-a rundă | Anastasia Nefedova | Haruka Kaji | 6-3, 7-5 | | detaliu meci |  W25 Jakarta | Hard |
| 28.05.19 | 1-a rundă | Yue Yuan | Haruka Kaji | 6-0, 6-1 | | detaliu meci | W25 Nonthaburi | Hard |
| 24.05.19 | Sfert de finală | Peangtarn Plipuech | Haruka Kaji | 2-6, 6-0, 6-3 | | detaliu meci | W25 Nonthaburi | Hard |
| 23.05.19 | a 2-a rundă | Haruka Kaji | Tamachan Momkoonthod | 4-6, 6-2, 6-4 | | detaliu meci | ||
| 22.05.19 | 1-a rundă | Haruka Kaji | Gabriella Da Silva Fick | 7-5, 1-6, 6-4 | | detaliu meci | ||
| 01.05.19 | 1-a rundă | Mayo Hibi | Haruka Kaji | 7-63, 6-1 | | detaliu meci | W80 Gifu | Hard |
| 29.04.19 | 1-a rundă de calif. | Haruka Kaji | Olivia Tjandramulia | 6-4, 6-1 | | detaliu meci | ||
| 29.04.19 | Calificare | Haruka Kaji | Xiaodi You | 6-4, 7-64 | | detaliu meci | ||
| 11.04.19 | a 2-a rundă | Aldila Sutjiadi | Haruka Kaji | 7-61, 7-65 | | detaliu meci | W25 Hong | Hard |
| 10.04.19 | 1-a rundă | Haruka Kaji | Eudice Wong Chong | 6-3, 3-6, 6-4 | | detaliu meci | ||
| 05.04.19 | Sfert de finală | Daria Snigur | Haruka Kaji | 6-4, 6-1 | | detaliu meci | W25 Kashiwa | Hard |
| 04.04.19 | a 2-a rundă | Haruka Kaji | Shiho Akita | 6-4, 3-2, Shiho Akita - retragere | | detaliu meci | ||
| 02.04.19 | 1-a rundă | Haruka Kaji | Ya-Hsuan Lee | 6-3, 6-1 | | detaliu meci | ||
| 13.03.19 | 1-a rundă | Deniz Khazaniuk | Haruka Kaji | 6-3, 7-5 | | detaliu meci | W60 Shenzhen | Hard |
| 03.03.19 | 1-a rundă de calif. | Himeno Sakatsume | Haruka Kaji | 3-6, 7-65, 10-6 | | detaliu meci | W25 Yokohama | Hard |
| 25.02.19 | 1-a rundă | Robin Anderson | Haruka Kaji | 6-2, 6-4 | | detaliu meci | W25 Osaka | Hard |
| 31.01.19 | a 2-a rundă | Fatma Al Nabhani | Haruka Kaji | 6-1, 6-2 | | detaliu meci | W25 Jodhpur | Hard |
| 30.01.19 | 1-a rundă | Haruka Kaji | Verena Meliss | 6-3, 6-4 | | detaliu meci | ||
| 08.01.19 | 1-a rundă | Momoko Kobori | Haruka Kaji | 6-3, 6-0 | | detaliu meci | W25 Hong | Hard |
| 03.01.19 | a 2-a rundă | Barbora Stefkova | Haruka Kaji | 6-1, 6-1 | | detaliu meci | W25 Hong | Hard |
| 02.01.19 | 1-a rundă | Haruka Kaji | Jing-Jing Lu | 7-5, 7-5 | | detaliu meci | ||
| 18.10.18 | a 2-a rundă | Anhelina Kalinina | Haruka Kaji | 6-1, 6-0 | | detaliu meci | Suzhou | Hard |
| 17.10.18 | 1-a rundă | Haruka Kaji | Julia Glushko | 3-6, 6-4, 6-3 | | detaliu meci | ||
| 16.10.18 | Calificare | Jana Cepelova | Haruka Kaji | 6-2, 6-74, 6-3 | | detaliu meci | ||
| 15.10.18 | 2-a rundă de calif. | Haruka Kaji | Yue Yuan | 7-66, 4-6, 6-2 | | detaliu meci | ||
| 14.10.18 | 1-a rundă de calif. | Haruka Kaji | Qiu Yu Ye | 6-3, 7-64 | | detaliu meci | ||
| 11.10.18 | a 2-a rundă | Abigail Tere-Apisah | Haruka Kaji | 7-5, 6-3 | | detaliu meci | Toowoomba | Hard |
| 09.10.18 | 1-a rundă | Haruka Kaji | Mai Minokoshi | 1-6, 6-4, 6-3 | | detaliu meci | ||
| 04.10.18 | a 2-a rundă | Kimberly Birrell | Haruka Kaji | 6-2, 2-6, 7-65 | | detaliu meci | Brisbane | Hard |
| 02.10.18 | 1-a rundă | Haruka Kaji | Mai Minokoshi | 6-3, 2-6, 6-1 | | detaliu meci | ||
| 28.09.18 | Sfert de finală | Naiktha Bains | Haruka Kaji | 6-75, 6-1, 7-65 | | detaliu meci | Darwin | Hard |
| 27.09.18 | a 2-a rundă | Haruka Kaji | Ya-Hsuan Lee | 6-3, 6-3 | | detaliu meci | ||
| 26.09.18 | 1-a rundă | Haruka Kaji | Kaylah Mcphee | 6-1, 6-1 | | detaliu meci | ||
| 21.08.18 | 1-a rundă | Mai Minokoshi | Haruka Kaji | 6-3, 6-2 | | detaliu meci | Tsukuba | Hard |
| 16.08.18 | a 2-a rundă | Meiling Wang | Haruka Kaji | 6-1, 6-4 | | detaliu meci | Guiyang | Hard |
| 14.08.18 | 1-a rundă | Haruka Kaji | Hanyu Guo | 6-75, 7-5, 6-1 | | detaliu meci | ||
| 08.08.18 | 1-a rundă | Yuxuan Zhang | Haruka Kaji | 6-0, 6-4 | | detaliu meci | Jinan | Hard |
| 23.07.18 | 1-a rundă | Arina Rodionova | Haruka Kaji | 6-4, 7-64 | | detaliu meci | Granby | Hard |
| 19.07.18 | a 2-a rundă | Julia Glushko | Haruka Kaji | 6-2, 7-63 | | detaliu meci | Gatineau | Hard |
| 17.07.18 | 1-a rundă | Haruka Kaji | Ariana Arseneault | 6-1, 6-3 | | detaliu meci | ||
| 10.07.18 | 1-a rundă | Nagi Hanatani | Haruka Kaji | 6-4, 6-1 | | detaliu meci | Honolulu | Hard |
| 21.06.18 | a 2-a rundă | Na-Ri Kim | Haruka Kaji | 6-4, 3-6, 6-4 | | detaliu meci | Daegu | Hard |
| 20.06.18 | 1-a rundă | Haruka Kaji | Kanako Morisaki | 7-5, 6-3 | | detaliu meci | ||
| 15.06.18 | Semifinală | Risa Ozaki | Haruka Kaji | 2-6, 6-0, 6-4 | | detaliu meci |  Singapore | Hard |
| 14.06.18 | Sfert de finală | Haruka Kaji | Hiroko Kuwata | 6-3, 6-4 | | detaliu meci | ||
| 13.06.18 | a 2-a rundă | Haruka Kaji | Nastja Kolar | 3-6, 6-3, 6-4 | | detaliu meci | ||
| 12.06.18 | 1-a rundă | Haruka Kaji | Nagi Hanatani | 6-0, 6-4 | | detaliu meci | ||
| 08.06.18 | Semifinală | Jovana Jovic | Haruka Kaji | 6-3, 6-0 | | detaliu meci | Singapore | Hard |
| 07.06.18 | Sfert de finală | Haruka Kaji | Priscilla Heise | 6-1, 6-4 | | detaliu meci | ||
| 06.06.18 | a 2-a rundă | Haruka Kaji | Yuuki Tanaka | 6-74, 6-4, 6-1 | | detaliu meci | ||
| 05.06.18 | 1-a rundă | Haruka Kaji | Akiko Omae | 5-7, 5-0, Akiko Omae - retragere | | detaliu meci | ||
| 01.05.18 | 1-a rundă | Ling Zhang | Haruka Kaji | 6-2, 6-4 | | detaliu meci | Gifu | Hard |
| 25.04.18 | a 2-a rundă | Xinyun Han | Haruka Kaji | 6-4, 3-6, 6-3 | | detaliu meci | Quanzhou | Hard |
| 23.04.18 | 1-a rundă | Haruka Kaji | Fang Ying Xun | 6-3, 6-0 | | detaliu meci | ||
| 12.04.18 | a 2-a rundă | Junri Namigata | Haruka Kaji | 6-75, 6-3, 6-4 | | detaliu meci | Osaka | Hard |
| 10.04.18 | 1-a rundă | Haruka Kaji | Ryoko Ikeda | 6-3, 6-3 | | detaliu meci | ||
| 02.04.18 | Calificare | Alina Silich | Haruka Kaji | 6-2, 7-5 | | detaliu meci | Kashiwa | Hard |
| 01.04.18 | 1-a rundă de calif. | Haruka Kaji | Ange Oby Kajuru | 6-4, 6-0 | | detaliu meci | ||
| 27.03.18 | 1-a rundă | Fangzhou Liu | Haruka Kaji | 6-3, 6-2 | | detaliu meci | Kofu | Hard |
| 13.03.18 | 1-a rundă | Dejana Radanovic | Haruka Kaji | 6-3, 7-5 | | detaliu meci | Toyota | Hard |
| 06.03.18 | 1-a rundă | Veronika Kudermetova | Haruka Kaji | 6-3, 6-2 | | detaliu meci | Yokohama | Hard |
| 03.01.18 | a 2-a rundă | Kwan Yau Ng | Haruka Kaji | 6-2, 6-3 | | detaliu meci | Hong Kong | Hard |
| 02.01.18 | 1-a rundă | Haruka Kaji | Lulu Sun | 7-5, 6-3 | | detaliu meci | ||
| 30.12.17 | Finală | Haruka Kaji | Hiroko Kuwata | 4-6, 6-2, 7-64 | | detaliu meci | Hong Kong | Hard |
| 29.12.17 | Semifinală | Haruka Kaji | Ling Zhang | 4-6, 6-4, 6-0 | | detaliu meci | ||
| 28.12.17 | Sfert de finală | Haruka Kaji | Aiko Yoshitomi | 7-63, 3-6, 6-3 | | detaliu meci | ||
| 27.12.17 | a 2-a rundă | Haruka Kaji | Lulu Sun | 6-3, 1-6, 6-4 | | detaliu meci | ||
| 26.12.17 | 1-a rundă | Haruka Kaji | Mana Ayukawa | 7-5, 7-62 | | detaliu meci | ||
| 20.11.17 | 1-a rundă | Eri Hozumi | Haruka Kaji | 7-5, 6-1 | | detaliu meci | Honolulu | Hard |
| 19.11.17 | Calificare | Haruka Kaji | Mari Osaka | 6-3, 7-5 | | detaliu meci | ||
| 08.11.17 | 1-a rundă | Eri Hozumi | Haruka Kaji | 6-4, 7-5 | | detaliu meci | Tokyo | Hard |
| 16.09.17 | 1-a rundă de calif. | Madison Brengle | Haruka Kaji | 6-3, 6-4 | | detaliu meci | Tokyo | Hard |
| 04.08.17 | Finală | Haruka Kaji | Hua-Chen Lee | 6-4, 6-1 | | detaliu meci | Nonthaburi | Hard |
| 04.08.17 | Semifinală | Haruka Kaji | Pranjala Yadlapalli | 6-3, 6-3 | | detaliu meci | ||
| 03.08.17 | Sfert de finală | Haruka Kaji | Varunya Wongteanchai | 6-1, 6-3 | | detaliu meci | ||
| 02.08.17 | a 2-a rundă | Haruka Kaji | Masa Jovanovic | 3-6, 6-4, 6-0 | | detaliu meci | ||
| 01.08.17 | 1-a rundă | Haruka Kaji | Michika Ozeki | 6-3, 7-64 | | detaliu meci | ||
| 26.07.17 | a 2-a rundă | Alisa Kleybanova | Haruka Kaji | 6-2, 6-1 | | detaliu meci | Hua Hin | Hard |
| 25.07.17 | 1-a rundă | Haruka Kaji | Bunyawi Thamchaiwat | 7-5, 6-1 | | detaliu meci | ||
| 24.06.17 | Finală | Pei-Chi Lee | Haruka Kaji | 3-6, 7-5, 6-2 | | detaliu meci | Taipei | Hard |
| 24.06.17 | Semifinală | Haruka Kaji | Junri Namigata | 7-5, 6-4 | | detaliu meci | ||
| 23.06.17 | Sfert de finală | Haruka Kaji | Li-Yun Stefanie Tan | 7-5, 7-5 | | detaliu meci | ||
| 22.06.17 | a 2-a rundă | Haruka Kaji | Ramu Ueda | 6-3, 7-5 | | detaliu meci | ||
| 21.06.17 | 1-a rundă | Haruka Kaji | Mizuno Kijima | 6-3, 5-7, 7-5 | | detaliu meci | ||
| 17.06.17 | Finală | Haruka Kaji | Olivia Tjandramulia | 6-1, 6-3 | | detaliu meci | Kofu | Hard |
| 17.06.17 | Semifinală | Haruka Kaji | Miharu Imanishi | 6-4, 1-6, 6-4 | | detaliu meci | ||
| 16.06.17 | Sfert de finală | Haruka Kaji | Erina Hayashi | 6-1, 6-3 | | detaliu meci | ||
| 15.06.17 | a 2-a rundă | Haruka Kaji | Mai Minokoshi | 6-1, 6-2 | | detaliu meci | ||
| 13.06.17 | 1-a rundă | Haruka Kaji | Kyoka Okamura | 7-63, 6-3 | | detaliu meci | ||
| 12.06.17 | 1-a rundă de calif. | Haruka Kaji | Nao Nishida | 6-1, 5-7, 6-2 | | detaliu meci | ||
| 12.06.17 | 2-a rundă de calif. | Haruka Kaji | Naho Sato | 6-1, 6-3 | | detaliu meci | ||
| 12.06.17 | Calificare | Haruka Kaji | Natsumi Shioya | 7-66, 6-1 | | detaliu meci | ||
| 27.05.17 | Semifinală | Mari Osaka | Haruka Kaji | 6-1, 3-6, 6-2 | | detaliu meci | Goyang | Hard |
| 26.05.17 | Sfert de finală | Haruka Kaji | Ya-Hsuan Lee | 4-6, 3-3, Ya-Hsuan Lee - retragere | | detaliu meci | ||
| 25.05.17 | a 2-a rundă | Haruka Kaji | Seung-Yeon Hong | 0-6, 6-3, 7-5 | | detaliu meci | ||
| 23.05.17 | 1-a rundă | Haruka Kaji | Sunam Jeong | 7-5, 6-3 | | detaliu meci | ||
| 17.05.17 | 1-a rundă | Ya-Hsuan Lee | Haruka Kaji | 6-0, 6-2 | | detaliu meci | Incheon | Hard |
| 15.05.17 | 2-a rundă de calif. | Haruka Kaji | Se-Hyun Kim | 6-0, 4-2, Se-Hyun Kim - retragere | | detaliu meci | ||
| 15.05.17 | Calificare | Haruka Kaji | Eunji Lee | 6-0, 6-3 | | detaliu meci | ||
| 10.05.17 | a 2-a rundă | Michaela Haet | Haruka Kaji | 6-2, 3-6, 6-1 | | detaliu meci | Hua Hin | Hard |
| 09.05.17 | 1-a rundă | Haruka Kaji | Alicia Barnett | 6-3, 6-1 | | detaliu meci | ||
| 08.05.17 | Calificare | Haruka Kaji | Si Qi Liu | 6-2, 7-5 | | detaliu meci | ||
| 08.05.17 | 1-a rundă de calif. | Haruka Kaji | Michiru Furuya | 6-3, 5-7, 6-1 | | detaliu meci | ||
| 30.04.17 | 1-a rundă | Karman Kaur Thandi | Haruka Kaji | 6-1, 6-3 | | detaliu meci | Hua Hin | Hard |
| 05.04.17 | 1-a rundă | Haruka Kaji | Hiroko Kuwata | 4-6, 6-3, 6-1 | | detaliu meci | Kashiwa | Hard |
| 05.04.17 | a 2-a rundă | Momoko Kobori | Haruka Kaji | 6-3, 7-62 | | detaliu meci | ||
| 03.04.17 | 1-a rundă de calif. | Haruka Kaji | Ayaka Okuno | 7-66, 6-2 | | detaliu meci | ||
| 03.04.17 | Calificare | Haruka Kaji | Yuki Kristina Chiang | 6-4, 6-4 | | detaliu meci | ||
| 30.03.17 | Sfert de finală | Erika Sema | Haruka Kaji | 6-4, 6-3 | | detaliu meci | Kofu | Hard |
| 30.03.17 | a 2-a rundă | Haruka Kaji | Sunam Jeong | 7-63, 4-6, 7-5 | | detaliu meci | ||
| 29.03.17 | 1-a rundă | Haruka Kaji | Ayano Shimizu | 6-1, 7-5 | | detaliu meci | ||
| 27.03.17 | 1-a rundă de calif. | Haruka Kaji | Utaka Kishigami | 6-4, 7-5 | | detaliu meci | ||
| 27.03.17 | 2-a rundă de calif. | Haruka Kaji | Chihiro Takayama | 6-4, 2-6, 7-64 | | detaliu meci | ||
| 27.03.17 | Calificare | Haruka Kaji | Sarah-Rebecca Sekulic | 6-4, 6-3 | | detaliu meci | ||
| 09.03.17 | a 2-a rundă | Mayo Hibi | Haruka Kaji | 6-3, 6-3 | | detaliu meci | Yokohama | Hard |
| 08.03.17 | 1-a rundă | Haruka Kaji | Ramu Ueda | 7-63, 6-1 | | detaliu meci | ||
| 06.03.17 | 1-a rundă de calif. | Haruka Kaji | Ayumi Koshiishi | 4-6, 6-1, 6-4 | | detaliu meci | ||
| 06.03.17 | Calificare | Haruka Kaji | Kotomi Takahata | 4-6, 6-4, 6-4 | | detaliu meci | ||
| 01.03.17 | a 2-a rundă | Destanee Aiava | Haruka Kaji | 6-1, 6-3 | | detaliu meci | Clare | Hard |
| 28.02.17 | 1-a rundă | Haruka Kaji | Erika Sema | 7-64, 6-2 | | detaliu meci | ||
| 27.02.17 | 2-a rundă de calif. | Haruka Kaji | Elyse Edwards | 6-0, 6-3 | | detaliu meci | ||
| 27.02.17 | Calificare | Haruka Kaji | Pei-Chi Lee | 7-5, 7-63 | | detaliu meci | ||
| 21.02.17 | 1-a rundă | Viktoria Hruncakova | Haruka Kaji | 3-6, 7-65, 6-2 | | detaliu meci | Perth | Hard |
| 20.02.17 | Calificare | Masa Jovanovic | Haruka Kaji | 6-4, 7-5 | | detaliu meci | ||
| 20.02.17 | 1-a rundă de calif. | Haruka Kaji | Aiko Yoshitomi | 6-2, 6-0 | | detaliu meci | ||
| 20.02.17 | 2-a rundă de calif. | Haruka Kaji | Miharu Imanishi | 1-6, 6-2, 6-3 | | detaliu meci | ||
| 13.02.17 | 1-a rundă de calif. | Catherine Harrison | Haruka Kaji | 6-3, 6-1 | | detaliu meci | Perth | Hard |
| 13.10.16 | Sfert de finală | Beatrice Gumulya | Haruka Kaji | 7-64, 6-76, 6-4 | | detaliu meci | Jakarta | Hard |
| 12.10.16 | a 2-a rundă | Haruka Kaji | Ashmitha Easwaramurthi | 6-2, 6-0 | | detaliu meci | ||
| 11.10.16 | 1-a rundă | Haruka Kaji | Julia Fisch | 5-4, Julia Fisch - retragere | | detaliu meci | ||
| 30.09.16 | a 2-a rundă | Riko Sawayanagi | Haruka Kaji | 6-2, 6-3 | | detaliu meci | Iizuka | Hard |
| 27.09.16 | 1-a rundă | Haruka Kaji | Mizuno Kijima | 6-3, 6-75, 6-3 | | detaliu meci | ||
| 26.09.16 | 1-a rundă de calif. | Haruka Kaji | Meina Koori | 6-2, 6-0 | | detaliu meci | ||
| 26.09.16 | Calificare | Haruka Kaji | Chihiro Takayama | 6-3, 3-6, 6-2 | | detaliu meci | ||
| 23.06.16 | a 2-a rundă | I-Hsuan Cho | Haruka Kaji | 3-6, 6-4, 6-3 | | detaliu meci | Kaohsiung | Hard |
| 21.06.16 | 1-a rundă | Haruka Kaji | Nozomi Fujioka | 6-4, 1-0, Nozomi Fujioka - retragere | | detaliu meci | ||
| 15.06.16 | 1-a rundă | Mai Minokoshi | Haruka Kaji | 6-4, 6-3 | | detaliu meci | Kaohsiung | Hard |
| 06.06.16 | 1-a rundă de calif. | Mitsumi Kawasaki | Haruka Kaji | 6-3, 6-72, 6-4 | | detaliu meci | Tokyo | Hard |
| 02.05.16 | 1-a rundă de calif. | Ayumi Miyamoto | Haruka Kaji | 6-1, 6-1 | | detaliu meci | Gifu | Hard |
| 28.03.16 | 1-a rundă de calif. | Andrea Raaholdt | Haruka Kaji | 6-1, 6-0 | | detaliu meci | Kofu | Hard |
| 22.03.16 | 1-a rundă | Yukina Saigo | Haruka Kaji | 6-4, 6-3 | | detaliu meci | Nishi Tama | Hard |
| 14.03.16 | 2-a rundă de calif. | Haruka Kaji | Yi Yuan | 6-1, 6-4 | | detaliu meci | Nanjing | Hard |
| 14.03.16 | Calificare | Yidi Yang | Haruka Kaji | 6-2, 7-65 | | detaliu meci | ||
| 07.03.16 | 1-a rundă de calif. | Lingwei Kong | Haruka Kaji | 6-4, 7-65 | | detaliu meci | Nanjing | Hard |
| 21.12.15 | a 2-a rundă | Emma Laine | Haruka Kaji | 6-1, 6-1 | | detaliu meci | Hong Kong | Hard |
| 21.12.15 | 1-a rundă | Haruka Kaji | Zoe Gwen Scandalis | 1-6, 6-3, 6-4 | | detaliu meci | ||
| 14.12.15 | Sfert de finală | Haruka Kaji | Angelina Zhuravleva | 6-4, 4-6, 6-2 | | detaliu meci | Hong Kong | Hard |
| 14.12.15 | a 2-a rundă | Haruka Kaji | Yan Wang | 6-3, 2-1, Yan Wang - retragere | | detaliu meci | ||
| 14.12.15 | Semifinală | Haruka Kaji | Mana Ayukawa | 5-2, Mana Ayukawa - retragere | | detaliu meci | ||
| 14.12.15 | 1-a rundă de calif. | Haruka Kaji | Avril Look | 6-1, 6-0 | | detaliu meci | ||
| 14.12.15 | Finală | Haruka Kaji | Tori Kinard | 6-1, 3-6, 2-2, Tori Kinard - retragere | | detaliu meci | ||
| 14.12.15 | Calificare | Haruka Kaji | Mami Hasegawa | 7-5, 2-6, 7-5 | | detaliu meci | ||
| 14.12.15 | 1-a rundă | Haruka Kaji | Yuanyi Yu | 6-3, 6-3 | | detaliu meci | ||
| 16.11.15 | 1-a rundă de calif. | Ji-Hee Choi | Haruka Kaji | 6-1, 7-5 | | detaliu meci | Tokyo | Hard |
| 28.09.15 | 1-a rundă | Haruka Kaji | Ho Ching Wu | 3-6, 6-2, 7-66 | | detaliu meci | Jakarta | Hard |
| 28.09.15 | Sfert de finală | Chayenne Ewijk | Haruka Kaji | 7-5, 7-5 | | detaliu meci | ||
| 28.09.15 | a 2-a rundă | Haruka Kaji | Risa Hasegawa | 6-3, 7-5 | | detaliu meci | ||
| 21.09.15 | a 2-a rundă | Dhruthi Tatachar Venugopal | Haruka Kaji | 6-1, 6-2 | | detaliu meci | Solo | Hard |
| 21.09.15 | 1-a rundă | Haruka Kaji | Monica Putri Kusuma Wardhani | 6-0, 6-1 | | detaliu meci | ||
| 22.06.15 | 1-a rundă | Haruka Kaji | Yurina Koshino | 6-4, 3-2, Yurina Koshino - retragere | | detaliu meci | Kaohsiung | Hard |
| 22.06.15 | a 2-a rundă | Haruka Kaji | Man Ying Maggie Ng | 6-3, 6-0 | | detaliu meci | ||
| 22.06.15 | Sfert de finală | Ching-Wen Hsu | Haruka Kaji | 6-3, 6-4 | | detaliu meci | ||
| 23.03.15 | 1-a rundă | Nagi Hanatani | Haruka Kaji | 6-3, 6-2 | | detaliu meci | Nishi Tama | Hard |
| 16.03.15 | 1-a rundă | Akari Inoue | Haruka Kaji | 6-2, 6-1 | | detaliu meci | Kofu | Hard |
| 04.10.14 | 1-a rundă de calif. | Latisha Chan | Haruka Kaji | 6-3, 6-1 | | detaliu meci | Osaka | Hard |
| 25.08.14 | 1-a rundă | Yuxuan Zhang | Haruka Kaji | 6-0, 6-3 | | detaliu meci | Yeongwol | Hard |
| 30.06.14 | 1-a rundă | Haruka Kaji | Jia Qi Kang | 3-6, 6-0, 6-1 | | detaliu meci | Gimcheon | Hard |
| 30.06.14 | Semifinală | Na-Lae Han | Haruka Kaji | 6-0, 7-65 | | detaliu meci | ||
| 30.06.14 | a 2-a rundă | Haruka Kaji | Se Jin Lee | 6-3, 6-3 | | detaliu meci | ||
| 30.06.14 | Sfert de finală | Haruka Kaji | Seo-Kyung Kang | 6-4, 6-2 | | detaliu meci | ||
| 23.06.14 | 1-a rundă | Haruka Kaji | Yeong Won Jeong | 6-2, 6-4 | | detaliu meci | Gimcheon | Hard |
| 23.06.14 | a 2-a rundă | Haruka Kaji | Makoto Ninomiya | 6-2, 6-4 | | detaliu meci | ||
| 23.06.14 | Sfert de finală | Ye-Ra Lee | Haruka Kaji | 6-1, 6-3 | | detaliu meci | ||
| 02.06.14 | 1-a rundă | Akiko Omae | Haruka Kaji | 6-4, 6-2 | | detaliu meci | Tokyo | Hard |
| 05.05.14 | 1-a rundă de calif. | Susanne Celik | Haruka Kaji | 6-2, 6-1 | | detaliu meci | Incheon | Hard |
| 28.04.14 | 2-a rundă de calif. | Junri Namigata | Haruka Kaji | 6-4, 6-2 | | detaliu meci | Gifu | Hard |
| 28.04.14 | 1-a rundă de calif. | Haruka Kaji | Yuki Ukai | 6-2, 6-2 | | detaliu meci | ||
| 24.03.14 | 1-a rundă | Fangzhou Liu | Haruka Kaji | 7-5, 6-2 | | detaliu meci | Shenzhen | Hard |
| 17.03.14 | Calificare | Haruka Kaji | Yuanyi Yu | 6-0, 6-2 | | detaliu meci | Shenzhen | Hard |
| 17.03.14 | 1-a rundă | Haruka Kaji | Xuliu Sun | 6-2, 6-1 | | detaliu meci | ||
| 17.03.14 | a 2-a rundă | Chin-Wei Chan | Haruka Kaji | 6-1, 6-0 | | detaliu meci | ||
| 17.03.14 | 2-a rundă de calif. | Haruka Kaji | Lu Yu | 6-2, 6-1 | | detaliu meci | ||
| 10.03.14 | 2-a rundă de calif. | Haruka Kaji | Jiaxi Lu | 6-2, 6-1 | | detaliu meci | Shenzhen | Hard |
| 10.03.14 | Calificare | Jiahui Chen | Haruka Kaji | 6-2, 6-3 | | detaliu meci | ||
| 24.02.14 | 2-a rundă de calif. | Paige Mary Hourigan | Haruka Kaji | 7-5, 6-1 | | detaliu meci | Port Pirie | Hard |
| 28.10.13 | 2-a rundă de calif. | Yu-Chieh Hsieh | Haruka Kaji | 6-3, 6-4 | | detaliu meci | Taipei | Hard |
| 28.10.13 | 1-a rundă de calif. | Haruka Kaji | Yoshimi Kawasaki | 5-5, Yoshimi Kawasaki - retragere | | detaliu meci | ||
| 01.07.13 | a 2-a rundă | Shiho Akita | Haruka Kaji | 6-0, 7-65 | | detaliu meci | Bangkok | Hard |
| 01.07.13 | 1-a rundă | Haruka Kaji | Apichaya Runglerdkriangkrai | 6-1, 6-2 | | detaliu meci | ||
| 24.06.13 | 1-a rundă | Di Zhao | Haruka Kaji | 7-5, 6-1 | | detaliu meci | Gimcheon | Hard |
| 17.06.13 | a 2-a rundă | Haruka Kaji | Sung-Hee Han | 6-2, 7-67 | | detaliu meci | Gimcheon | Hard |
| 17.06.13 | Sfert de finală | Seung-Yeon Hong | Haruka Kaji | 2-6, 6-2, 6-3 | | detaliu meci | ||
| 17.06.13 | 1-a rundă | Haruka Kaji | Sanae Ohta | 6-2, 6-1 | | detaliu meci | ||
| 29.04.13 | 1-a rundă de calif. | Yue-Yue Hu | Haruka Kaji | 6-1, 7-5 | | detaliu meci | Gifu | Hard |
| 25.03.13 | 1-a rundă de calif. | Machika Miyaji | Haruka Kaji | 6-3, 6-1 | | detaliu meci | Nishi Tama | Hard |
| 04.03.13 | 1-a rundă | Haruka Kaji | Nives Baric | 0-6, 6-4, 6-1 | | detaliu meci | Sydney | Hard |
| 04.03.13 | 1-a rundă de calif. | Haruka Kaji | Joanne Karaitiana | 6-2, 6-0 | | detaliu meci | ||
| 04.03.13 | a 2-a rundă | Haruka Kaji | Yafan Wang | 6-4, 7-65 | | detaliu meci | ||
| 04.03.13 | 2-a rundă de calif. | Haruka Kaji | Emily Hewson | 6-2, 5-7, 7-5 | | detaliu meci | ||
| 04.03.13 | Sfert de finală | Azra Hadzic | Haruka Kaji | 6-2, 6-1 | | detaliu meci | ||
| 04.03.13 | Calificare | Haruka Kaji | Michika Ozeki | 6-1, 6-3 | | detaliu meci | ||
| 25.02.13 | 1-a rundă de calif. | Haruka Kaji | Martina Hudaly | 6-2, 6-0 | | detaliu meci | Sydney | Hard |
| 25.02.13 | a 2-a rundă | Yafan Wang | Haruka Kaji | 6-1, 6-2 | | detaliu meci | ||
| 25.02.13 | 2-a rundă de calif. | Haruka Kaji | Emily Hewson | 1-6, 7-5, 6-4 | | detaliu meci | ||
| 25.02.13 | Calificare | Haruka Kaji | Deeon Mladin | 6-3, 6-4 | | detaliu meci | ||
| 25.02.13 | 1-a rundă | Haruka Kaji | Yana Mogilnitskaya | 7-5, 3-6, 6-1 | | detaliu meci |
Pariați responsabil.