YOKOHAMA KEIO CHALLENGER by MITA KOSAN
YokohamaHardCH2025
November 17, 2025 – November 23, 2025$100,000
Draw & Results
Finals
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Rei Sakamoto(JPN) | 4-6, 7-6, 6-4 | Kaichi Uchida(JPN) | #176 | #288 | 02:16:00m |
Semi-Finals
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Kaichi Uchida(JPN) | 6-4, 6-2 | Igor Marcondes(BRA) | #288 | #469 | 01:02:00m |
| Rei Sakamoto(JPN) | 3-6, 6-1, 6-3 | Akira Santillan(JPN) | #176 | #348 | 01:51:00m |
Quarter-Finals
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Kaichi Uchida(JPN) | 6-2, 6-2 | Kei Nishikori(JPN) | #288 | #158 | 00:59:00m |
| Igor Marcondes(BRA) | 6-1, 6-3 | Neil Oberleitner(AUT) | #469 | #442 | 01:00:00m |
| Akira Santillan(JPN) | 6-3, 6-2 | Yusuke Kusuhara(JPN) | #348 | #744 | 00:58:00m |
| Rei Sakamoto(JPN) | 3-6, 6-3, 6-4 | Yasutaka Uchiyama(JPN) | #176 | #330 | 01:57:00m |
Round of 16
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Kei Nishikori(JPN) | 6-4, 6-1 | Sanhui Shin(KOR) | #158 | #374 | 01:10:00m |
| Kaichi Uchida(JPN) | 7-5, 6-4 | Ryotaro Taguchi(JPN) | #288 | #902 | 01:22:00m |
| Igor Marcondes(BRA) | 6-2, 7-6 | Yuki Mochizuki(JPN) | #469 | #534 | 01:33:00m |
| Neil Oberleitner(AUT) | 7-5, 4-6, 6-3 | Hikaru Shiraishi(JPN) | #442 | #441 | 02:27:00m |
| Yusuke Kusuhara(JPN) | 6-3, 6-3 | Yuta Shimizu(JPN) | #744 | #246 | 01:10:00m |
| Akira Santillan(JPN) | 6-3, 6-1 | Kaylan Bigun(USA) | #348 | #743 | 00:54:00m |
| Yasutaka Uchiyama(JPN) | 6-3, 6-3 | Michael Vrbensky(CZE) | #330 | #636 | 01:22:00m |
| Rei Sakamoto(JPN) | 6-1, 6-2 | Maxim Zhukov(RUS) | #176 | #455 | 01:04:00m |
Round of 32
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Kei Nishikori(JPN) | 4-6, 6-1, 6-1 | Taisei Ichikawa(JPN) | #158 | #793 | 01:22:00m |
| Sanhui Shin(KOR) | 3-6, 6-1, 6-2 | Lennon Roark Jones(JPN) | #374 | #1802 | 02:01:00m |
| Ryotaro Taguchi(JPN) | 7-6, 6-2 | Maximus Jones(THA) | #902 | #353 | 01:30:00m |
| Kaichi Uchida(JPN) | 6-3, 6-0 | Hyeon Chung(KOR) | #288 | #366 | 01:04:00m |
| Igor Marcondes(BRA) | 6-4, 6-4 | Oliver Crawford(GBR) | #469 | #192 | 01:17:00m |
| Yuki Mochizuki(JPN) | 6-4, 7-6 | Jumpei Yamasaki(JPN) | #534 | #914 | 02:09:00m |
| Hikaru Shiraishi(JPN) | 2-6, 6-2, 6-3 | Max Basing(GBR) | #441 | #413 | 02:16:00m |
| Neil Oberleitner(AUT) | 7-5, 6-2 | Yu Hsiou Hsu(TPE) | #442 | #219 | 01:21:00m |
| Yuta Shimizu(JPN) | 6-2, 6-2 | Yusuke Takahashi(JPN) | #246 | #427 | 01:05:00m |
| Yusuke Kusuhara(JPN) | 7-5, 6-3 | Kokoro Isomura(JPN) | #744 | #543 | 01:32:00m |
| Akira Santillan(JPN) | 6-0, 6-2 | Masamichi Imamura(JPN) | #348 | #522 | 00:49:00m |
| Kaylan Bigun(USA) | 3-0 | Elias Ymer(SWE) | #743 | #169 | 00:13:00m |
| Yasutaka Uchiyama(JPN) | 6-4, 7-6 | Tsung-Hao Huang(TPE) | #330 | #479 | 01:51:00m |
| Michael Vrbensky(CZE) | 6-3, 6-3 | Woobin Shin(KOR) | #636 | #569 | 01:18:00m |
| Maxim Zhukov(RUS) | 6-4, 6-4 | Ryo Tabata(JPN) | #455 | #949 | 01:27:00m |
| Rei Sakamoto(JPN) | 6-4, 7-6 | Kasidit Samrej(THA) | #176 | #414 | 01:21:00m |
2nd Round Qualifying
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Igor Marcondes(BRA) | 6-4, 6-4 | JiSung Nam(KOR) | #469 | #692 | 01:19:00m |
| Taisei Ichikawa(JPN) | 7-5, 6-3 | Ryuki Matsuda(JPN) | #793 | #537 | 01:26:00m |
| Yusuke Kusuhara(JPN) | 6-7, 6-1, 6-2 | Koki Matsuda(JPN) | #744 | #615 | 01:50:00m |
| Michael Vrbensky(CZE) | 6-3, 6-3 | Thijmen Loof(NED) | #636 | #2046 | 01:23:00m |
| Ryotaro Taguchi(JPN) | 4-6, 6-3, 6-3 | Yuta Kikuchi(JPN) | #902 | #642 | 01:52:00m |
| Jumpei Yamasaki(JPN) | 6-3, 6-1 | Naoki Nakagawa(JPN) | #914 | #653 | 01:10:00m |
1st Round Qualifying
| Winner | Score | Loser | W Rank | L Rank | Duration |
|---|---|---|---|---|---|
| Igor Marcondes(BRA) | 6-3, 6-4 | Kanju Furusho(JPN) | #469 | — | 01:11:00m |
| JiSung Nam(KOR) | 6-0, 6-1 | Nathan Trouve(FRA) | #692 | #1892 | 00:53:00m |
| Ryuki Matsuda(JPN) | 7-6, 6-4 | Braden Shick(USA) | #537 | #866 | 01:52:00m |
| Taisei Ichikawa(JPN) | 6-4, 6-4 | Shogo Sanada(JPN) | #793 | — | 01:14:00m |
| Koki Matsuda(JPN) | 6-4, 6-1 | Ren Nakamura(JPN) | #615 | #1687 | 01:06:00m |
| Yusuke Kusuhara(JPN) | 6-0, 6-1 | Gai Ando(JPN) | #744 | — | 00:55:00m |
| Michael Vrbensky(CZE) | 7-5, 6-4 | Ramkumar Ramanathan(IND) | #636 | #1141 | 01:20:00m |
| Thijmen Loof(NED) | 6-7, 6-2, 6-4 | Shunsuke Nakagawa(JPN) | #2046 | #846 | 02:00:00m |
| Yuta Kikuchi(JPN) | 0-6, 6-2, 6-2 | Kaito Uesugi(JPN) | #642 | #1405 | 01:21:00m |
| Ryotaro Taguchi(JPN) | 6-7, 6-4, 7-6 | Sora Fukuda(JPN) | #902 | #700 | 02:41:00m |
| Naoki Nakagawa(JPN) | 6-4, 6-0 | Yuma Tobe(JPN) | #653 | — | 00:51:00m |
| Jumpei Yamasaki(JPN) | 6-4 | Uisung Park(KOR) | #914 | #695 | 00:37:00m |
Past Winners
| Year | Winner | Country | Surface |
|---|---|---|---|
| 2025 | Rei Sakamoto | JPN | Hard |
| 2024 | Yuta Shimizu | JPN | Hard |
| 2023 | Yosuke Watanuki | JPN | Hard |
| 2022 | Christopher O'Connell | AUS | Hard |
| 2019 | Soonwoo Kwon | KOR | Hard |
| 2018 | Yasutaka Uchiyama | JPN | Hard |
| 2017 | Yuichi Sugita | JPN | Hard |
| 2015 | Taro Daniel | JPN | Hard |
| 2014 | John Millman | AUS | Hard |
| 2013 | Matthew Ebden | AUS | Hard |
| 2012 | Matteo Viola | ITA | Hard |