Nume: William Jansen
Ţara: Regatul Unit
Data naşterii: 06.12.04, 21 Vârsta
Premii: 24370 $
Total meciuri: 80
Victorii: 42
Succes: 52.5 %
Ţara: Regatul Unit
Data naşterii: 06.12.04, 21 Vârsta
Premii: 24370 $
Total meciuri: 80
Victorii: 42
Succes: 52.5 %
| an | sumar | Hard | Zgura | In. Hard | Carpet | Iarbă | Acryl |
| 2026 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2025 | 9/7 | 2/3 | 0/0 | 3/2 | 4/1 | 0/1 | 0/0 |
| 2024 | 14/7 | 12/4 | 0/0 | 2/2 | 0/0 | 0/1 | 0/0 |
| 2023 | 6/7 | 5/5 | 0/0 | 0/0 | 0/0 | 1/2 | 0/0 |
| 2022 | 13/14 | 10/10 | 0/0 | 0/0 | 0/0 | 3/4 | 0/0 |
| 2021 | 0/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/2 | 0/0 |
| ÎN TOTAL | 42/38 | 29/22 | 0/0 | 5/4 | 4/1 | 4/11 | 0/0 |
| succes % | 52.5 % | 56.86 % | 0 % | 55.56 % | 80 % | 26.67 % | 0 % |
William Jansen / nejucate / ultimele
| nu a fost găsit nici un meci |
William Jansen form
William Jansen / ultimele 50 meciuri
| 31.05.26 | 1-a rundă de calif. | Clement Chidekh | William Jansen | 6-1, 6-4 |  | detaliu meci |  Birmingham Challenger | Iarbă |
| 13.11.25 | a 2-a rundă | Aidan Kim | William Jansen | 6-3, 6-4 | | detaliu meci |  M25 Columbus | In. Hard |
| 12.11.25 | 1-a rundă | William Jansen | Ilija Palavestra | 6-4, 6-2 |  | detaliu meci | ||
| 01.08.25 | Sfert de finală | James Story | William Jansen | 7-66, 6-3 | | detaliu meci |  M15 Dublin | Carpet |
| 01.08.25 | Sfert de finală | James Story | William Jansen | 7-66, 6-3 | | detaliu meci | ||
| 31.07.25 | a 2-a rundă | William Jansen | Daniel De Jonge | 6-1, 6-4 | | detaliu meci | ||
| 31.07.25 | a 2-a rundă | William Jansen | Daniel De Jonge | 6-1, 6-4 | | detaliu meci | ||
| 29.07.25 | 1-a rundă | William Jansen | Hugo Pierre | 6-3, 6-4 | | detaliu meci | ||
| 29.07.25 | 1-a rundă | William Jansen | Hugo Pierre | 6-3, 6-4 | | detaliu meci | ||
| 28.07.25 | Calificare | William Jansen | Joe Tyler | 7-5, 6-1 | | detaliu meci | ||
| 28.07.25 | Calificare | William Jansen | Joe Tyler | 7-5, 6-1 | | detaliu meci | ||
| 27.07.25 | 1-a rundă de calif. | William Jansen | Cian Mcdonnell | 7-67, 5-7, 11-9 | | detaliu meci | ||
| 27.07.25 | 1-a rundă de calif. | William Jansen | Cian Mcdonnell | 7-67, 5-7, 11-9 | | detaliu meci | ||
| 07.07.25 | 1-a rundă de calif. | Patrick Zahraj | William Jansen | 6-4, 6-2 | | detaliu meci | Nottingham 3 | Iarbă |
| 25.06.25 | 1-a rundă | Alejandro Manzanera Pertusa | William Jansen | 6-1, 6-3 | | detaliu meci |  M15 Monastir | Hard |
| 04.06.25 | 1-a rundă | Daniel De Jonge | William Jansen | 4-6, 6-2, 6-4 | | detaliu meci |  M15 Kayseri | Hard |
| 31.05.25 | Sfert de finală | Arda Azkara | William Jansen | 6-3, 7-64 | | detaliu meci | M15 Kayseri | Hard |
| 30.05.25 | a 2-a rundă | William Jansen | Patrick Brady | 6-2, 6-3 | | detaliu meci | ||
| 28.05.25 | 1-a rundă | William Jansen | Piotr Pawlak | 2-6, 7-61, 6-2 | | detaliu meci | ||
| 08.01.25 | 1-a rundă | Theo Papamalamis | William Jansen | 4-6, 6-4, 7-64 | | detaliu meci | M25 Ithaca | In. Hard |
| 07.01.25 | Calificare | William Jansen | Rushil Khosla | 6-1, 7-5 | | detaliu meci | ||
| 06.01.25 | 1-a rundă de calif. | William Jansen | Eric David Verdes | 6-4, 4-6, 10-3 | | detaliu meci | ||
| 04.12.24 | 1-a rundă | Goncalo Oliveira | William Jansen | 6-4, 6-4 | | detaliu meci |  M15 Stellenbosch | Hard |
| 15.11.24 | Sfert de finală | Aidan Kim | William Jansen | 7-5, 6-4 | | detaliu meci | M25 Columbus | In. Hard |
| 14.11.24 | a 2-a rundă | William Jansen | Hiroki Sakagawa | 7-64, 6-2 | | detaliu meci | ||
| 13.11.24 | 1-a rundă | William Jansen | Nathan Ponwith | 6-3, 6-2 | | detaliu meci | ||
| 15.09.24 | 1-a rundă de calif. | Andres Martin | William Jansen | 6-3, 6-74, 7-5 | | detaliu meci | Columbus Challenger | In. Hard |
| 20.06.24 | a 2-a rundă | Kasidit Samrej | William Jansen | 7-5, 6-4 | | detaliu meci |  M15 Hong | Hard |
| 19.06.24 | 1-a rundă | William Jansen | Thantub Suksumrarn | 6-3, 6-2 | | detaliu meci | ||
| 18.06.24 | Calificare | William Jansen | Charlie Pade | 6-1, 6-1 | | detaliu meci | ||
| 17.06.24 | 1-a rundă de calif. | William Jansen | Daniil Golubev | 6-2, 6-0 | | detaliu meci | ||
| 14.06.24 | Sfert de finală | Taiyo Yamanaka | William Jansen | 6-2, 7-5 | | detaliu meci | M15 Hong | Hard |
| 13.06.24 | a 2-a rundă | William Jansen | Tsung-Hao Huang | 6-3, 6-4 | | detaliu meci | ||
| 12.06.24 | 1-a rundă | William Jansen | Yuichiro Inui | 6-4, 6-4 | | detaliu meci | ||
| 11.06.24 | Calificare | William Jansen | Xirui Han | 6-3, 6-3 | | detaliu meci | ||
| 10.06.24 | 1-a rundă de calif. | William Jansen | Guntinun Sootinun-Opart | 2-6, 6-0, 10-1 | | detaliu meci | ||
| 02.06.24 | 1-a rundă de calif. | Alex Bolt | William Jansen | 7-63, 6-2 | | detaliu meci | Surbiton Challenger | Iarbă |
| 24.05.24 | Sfert de finală | Arthur Bouquier | William Jansen | 6-3, 6-4 | | detaliu meci | M15 Monastir | Hard |
| 23.05.24 | a 2-a rundă | William Jansen | Pedro Araujo | 6-3, 6-1 | | detaliu meci | ||
| 22.05.24 | 1-a rundă | William Jansen | Loic Namigandet Tenguere | 4-6, 6-1, 6-1 | | detaliu meci | ||
| 20.05.24 | 2-a rundă de calif. | William Jansen | Lyle Zaloumis | 6-2, 6-2 | | detaliu meci | ||
| 20.05.24 | Calificare | William Jansen | Rushil Khosla | 7-5, 6-2 | | detaliu meci | ||
| 19.05.24 | 1-a rundă de calif. | William Jansen | Moritz Kudernatsch | 3-6, 6-2, 10-1 | | detaliu meci | ||
| 28.12.23 | a 2-a rundă | Ryotaro Taguchi | William Jansen | 6-73, 6-2, 6-0 | | detaliu meci | M15 Monastir | Hard |
| 28.12.23 | 1-a rundă | William Jansen | Francesco Ferrari | 4-6, 7-66, 6-1 | | detaliu meci | ||
| 25.12.23 | 2-a rundă de calif. | William Jansen | Jordan Chrysostom | 6-2, 6-1 | | detaliu meci | ||
| 25.12.23 | Calificare | William Jansen | Daniel Vishnick | 6-2, 6-1 | | detaliu meci | ||
| 24.12.23 | 1-a rundă de calif. | William Jansen | Josh Roe Flannelly | 6-1, 6-0 | | detaliu meci | ||
| 08.11.23 | 1-a rundă | Brian Cernoch | William Jansen | 6-4, 7-64 | | detaliu meci | M15 Winston | Hard |
| 13.09.23 | 1-a rundă | Thai Kwiatkowski | William Jansen | 6-4, 6-3 | | detaliu meci | Cary 2 | Hard |
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