Nume: Keita Koyama
Ţara: Japonia
Data naşterii: 06.08.86, 39 Vârsta
Clasament ATP: 896
TOP poziţie în clasament: 896 (23.03.15, 16 puncte)
Puncte: 16
Total meciuri: 78
Victorii: 34
Succes: 43.59 %
Ţara: Japonia
Data naşterii: 06.08.86, 39 Vârsta
Clasament ATP: 896
TOP poziţie în clasament: 896 (23.03.15, 16 puncte)
Puncte: 16
Total meciuri: 78
Victorii: 34
Succes: 43.59 %
| an | sumar | Hard | Zgura | In. Hard | Carpet | Iarbă | Acryl |
| 2015 | 3/8 | 3/5 | 0/1 | 0/1 | 0/1 | 0/0 | 0/0 |
| 2014 | 13/13 | 8/9 | 4/2 | 0/0 | 1/2 | 0/0 | 0/0 |
| 2013 | 11/10 | 9/7 | 2/2 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2012 | 5/7 | 3/5 | 1/1 | 0/0 | 0/0 | 1/1 | 0/0 |
| 2011 | 2/3 | 0/1 | 0/1 | 0/0 | 0/0 | 2/1 | 0/0 |
| 2008 | 0/1 | 0/0 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2007 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2006 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| ÎN TOTAL | 34/44 | 23/29 | 7/7 | 0/1 | 1/5 | 3/2 | 0/0 |
| succes % | 43.59 % | 44.23 % | 50 % | 0 % | 16.67 % | 60 % | 0 % |
Keita Koyama / nejucate / ultimele
| nu a fost găsit nici un meci |
Keita Koyama form / an 2014
Keita Koyama / an 2014
| 15.11.14 | 1-a rundă de calif. | Keita Koyama | Kaichi Uchida | 6-3, 3-2, Kaichi Uchida - retragere |  | detaliu meci |  Toyota Challenger | Carpet |
| 15.11.14 | 2-a rundă de calif. | Issei Okamura | Keita Koyama | 6-3, 7-5 |  | detaliu meci | ||
| 07.11.14 | 1-a rundă de calif. | Makoto Ochi | Keita Koyama | 7-65, 7-64 | | detaliu meci | Yokohama Challenger | Hard |
| 28.10.14 | Calificare | Keita Koyama | Chuhan Wang | 5-7, 7-64, 6-4 | | detaliu meci |  Traralgon Challenger | Hard |
| 28.10.14 | 1-a rundă | Jake Eames | Keita Koyama | 6-2, 6-0 | | detaliu meci | ||
| 26.10.14 | 2-a rundă de calif. | Keita Koyama | Adam Hubble | 3-6, 6-4, 7-5 | | detaliu meci | ||
| 25.10.14 | 1-a rundă de calif. | Keita Koyama | Jeremy Beale | 6-2, 2-6, 7-62 | | detaliu meci | ||
| 15.09.14 | 1-a rundă | Keita Koyama | Kittiphong Wachiramanowong | 6-1, 6-2 | | detaliu meci |  Turkey F32 | Hard |
| 15.09.14 | a 2-a rundă | Hiroyasu Ehara | Keita Koyama | 6-0, 6-1 | | detaliu meci | ||
| 08.09.14 | Sfert de finală | Nikala Scholtz | Keita Koyama | 7-66, 6-3 | | detaliu meci | Turkey F31 | Hard |
| 08.09.14 | 1-a rundă | Keita Koyama | Michal Konecny | 7-68, 4-2, Michal Konecny - retragere | | detaliu meci | ||
| 08.09.14 | a 2-a rundă | Keita Koyama | Shonigmatjon Shofayziyev | 6-2, 6-2 | | detaliu meci | ||
| 23.06.14 | 1-a rundă | Keita Koyama | Koichi Sano | 6-3, 7-5 | | detaliu meci | Japan F8 | Zgura |
| 23.06.14 | a 2-a rundă | Yasutaka Uchiyama | Keita Koyama | 4-6, 6-1, 6-2 | | detaliu meci | ||
| 16.06.14 | 1-a rundă | Renta Tokuda | Keita Koyama | 4-6, 6-4, 6-1 | | detaliu meci | Japan F7 | Carpet |
| 09.06.14 | a 2-a rundă | Takashi Saito | Keita Koyama | 6-3, 6-1 | | detaliu meci | Japan F6 | Hard |
| 09.06.14 | 1-a rundă | Keita Koyama | Masayoshi Ono | 7-5, 6-3 | | detaliu meci | ||
| 02.06.14 | Semifinală | Takuto Niki | Keita Koyama | 6-2, 6-1 | | detaliu meci | Japan F5 | Zgura |
| 02.06.14 | 1-a rundă | Keita Koyama | Konosuke Kiryu | 6-2, 6-3 | | detaliu meci | ||
| 02.06.14 | a 2-a rundă | Keita Koyama | Masato Shiga | 4-6, 6-4, 6-3 | | detaliu meci | ||
| 02.06.14 | Sfert de finală | Keita Koyama | Bumpei Sato | 2-6, 6-4, 6-4 | | detaliu meci | ||
| 31.03.14 | 1-a rundă | Yusuke Watanuki | Keita Koyama | 6-2, 6-4 | | detaliu meci | Japan F4 | Hard |
| 24.03.14 | a 2-a rundă | Yusuke Watanuki | Keita Koyama | 6-0, 4-6, 6-1 | | detaliu meci | Japan F3 | Hard |
| 24.03.14 | 1-a rundă | Keita Koyama | Arata Onozawa | 6-3, 6-4 | | detaliu meci | ||
| 17.03.14 | 1-a rundă de calif. | Itsuki Imina | Keita Koyama | 6-4, 6-1 | | detaliu meci | Japan F2 | Hard |
| 10.03.14 | 1-a rundă de calif. | Kazuya Takayama | Keita Koyama | 6-72, 7-65, 7-5 | | detaliu meci | Japan F1 | Hard |
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