Hiromasa Koyama
Updated
- Rating6257.87
- ATP rank#1320
- Last 106-4
- Last 300-2
- Current streak2 Losses
Recent match previews
- 2026-10-20: vs Toshiki Karigyo, ATP Tanagura (X) (Japan)
Match effects, last 365 days
| Date | Opponent | Opp Rank | Opp Rating | Score | Result | Effect | % of Ranking | Tour | Tournament | Note |
|---|---|---|---|---|---|---|---|---|---|---|
| 28.10.2026 | Markus Malaszszak | 1385 | 6245.98 | 7-5, 7-6 | Loss | -107.34 | 176.41% | ATP SINGLES / 28.10.2026 | Japan Yanagawa | |
| 21.10.2026 | Toshiki Karigyo | 2148 | 6106.95 | 6-4, 1-6, 7-6 | Loss | -117.17 | 243.13% | ATP SINGLES / 21.10.2026 | Japan Tanagura | |
| 13.09.2026 | Zhao Zhao | 1513 | 6215.48 | 6-1, 6-3 | Win | 167.61 | 136.08% | ATP SINGLES / 13.09.2026 | China Wuning | |
| 12.09.2026 | Jaesung Choe | 1713 | 6178.45 | 6-4, 7-5 | Win | 70.59 | 135.03% | ATP SINGLES / 12.09.2026 | China Wuning | |
| 11.09.2026 | Wishaya Trongcharoenchaikul | 1557 | 6207.87 | 6-1, 6-4 | Win | 145.00 | 134.00% | ATP SINGLES / 11.09.2026 | China Wuning | |
| 10.09.2026 | Shao Zichen | 2243 | 6093.21 | 6-4, 6-4 | Win | -14.66 | 132.97% | ATP SINGLES / 10.09.2026 | China Wuning | |
| 09.09.2026 | Yue Xia | 2312 | 6083.53 | 6-1, 6-4 | Win | 20.66 | 131.95% | ATP SINGLES / 09.09.2026 | China Wuning | |
| 03.09.2026 | Qian Sun | 873 | 6374.19 | 6-4, 6-4 | Loss | -33.68 | 83.99% | ATP SINGLES / 03.09.2026 | China Wuning | |
| 02.09.2026 | Lachlan Vickery | 2418 | 6070.02 | 6-3, 6-2 | Win | 14.65 | 125.03% | ATP SINGLES / 02.09.2026 | China Wuning | |
| 27.08.2026 | Luca Castelnuovo | 508 | 6511.70 | 3-6, 7-6, 6-1 | Loss | 294.30 | 129.33% | ATP SINGLES / 27.08.2026 | Taiwan Taipei I | |
| 26.08.2026 | Shinji Hazawa | 1039 | 6329.93 | 6-7, 6-1, 6-2 | Win | 210.40 | 177.70% | ATP SINGLES / 26.08.2026 | Taiwan Taipei I | |
| 24.08.2026 | Taisei Ichikawa | 876 | 6373.71 | 4-6, 7-6, 1-0 | Win | 93.12 | 106.93% | ATP SINGLES / 24.08.2026 | Taiwan Taipei I | |
| 23.08.2026 | Yi-Xiang Huang | 4982 | 5612.94 | 7-5, 6-4 | Win | -494.93 | 115.76% | ATP SINGLES / 23.08.2026 | Taiwan Taipei I | |
| 21.08.2026 | Matthew Dellavedova | 575 | 6475.76 | 6-1, 6-2 | Loss | -12.11 | 28.50% | ATP SINGLES / 21.08.2026 | Taiwan Taipei I | |
| 18.08.2026 | Yuki Mochizuki | 965 | 6348.88 | 6-4, 6-4 | Win | 241.01 | 111.39% | ATP SINGLES / 18.08.2026 | Taiwan Taipei | |
| 17.08.2026 | Manish Sureshkumar | 981 | 6345.30 | 6-3, 1-6, 1-0 | Win | 198.68 | 73.69% | ATP SINGLES / 17.08.2026 | Taiwan Taipei | |
| 16.08.2026 | Kazuma Kawachi | 2201 | 6099.69 | 7-6, 6-2 | Win | -20.67 | 109.68% | ATP SINGLES / 16.08.2026 | Taiwan Taipei | |
| 08.07.2026 | Matthew Dellavedova | 575 | 6475.76 | 7-6, 6-0 | Loss | 167.89 | 40.61% | ATP SINGLES / 08.07.2026 | Japan Tokyo | |
| 30.06.2026 | Yusuke Takahashi | 693 | 6428.86 | 7-6, 6-2 | Loss | 77.24 | 50.91% | ATP SINGLES / 30.06.2026 | Japan Tokyo | |
| 17.06.2026 | Max Purcell | 374 | 6587.75 | 6-2, 6-1 | Loss | 0.00 | 17.27% | ATP SINGLES / 17.06.2026 | Japan Tokyo I | |
| 15.06.2026 | Jesse Delaney | 1289 | 6267.68 | 4-6, 7-5, 1-0 | Loss | 23.45 | 62.37% | ATP SINGLES / 15.06.2026 | Japan Tokyo I | |
| 14.06.2026 | Asahi Harazaki | 966 | 6348.71 | 3-6, 6-4, 1-0 | Win | 131.85 | 56.26% | ATP SINGLES / 14.06.2026 | Japan Tokyo I | |
| 10.06.2026 | Hayden Jones | 1113 | 6311.47 | 6-4, 7-6 | Loss | -36.40 | 54.56% | ATP SINGLES / 10.06.2026 | Japan Tokyo | |
| 06.06.2026 | Youssef Kadiri Hassani | 1690 | 6184.11 | 6-4, 6-7, 6-4 | Loss | -138.05 | 74.06% | ATP SINGLES / 06.06.2026 | Guam Harmon | |
| 05.06.2026 | Colin Sinclair | 882 | 6372.60 | 7-6, 7-6 | Win | 164.73 | 63.00% | ATP SINGLES / 05.06.2026 | Guam Harmon | |
| 04.06.2026 | Hoyoung Roh | 802 | 6394.38 | 7-6, 6-2 | Win | 274.01 | 62.51% | ATP SINGLES / 04.06.2026 | Guam Harmon | |
| 03.06.2026 | Adrian Arcon | 4058 | 5821.37 | 6-4, 6-2 | Win | -143.25 | 62.03% | ATP SINGLES / 03.06.2026 | Guam Harmon | |
| 30.05.2026 | Jake Delaney | 685 | 6431.78 | 6-3, 6-1 | Loss | -21.09 | 20.05% | ATP SINGLES / 30.05.2026 | Japan Karuizawa | |
| 29.05.2026 | Hikaru Shiraishi | 819 | 6389.88 | 7-6, 2-6, 6-3 | Win | 198.44 | 69.64% | ATP SINGLES / 29.05.2026 | Japan Karuizawa | |
| 28.05.2026 | Noritaka Koizumi | 1355 | 6251.50 | 6-4, 6-4 | Win | 143.63 | 59.23% | ATP SINGLES / 28.05.2026 | Japan Karuizawa | |
| 27.05.2026 | Ryota Tanuma | 1158 | 6299.54 | 6-1, 4-6, 7-6 | Win | 112.92 | 78.37% | ATP SINGLES / 27.05.2026 | Japan Karuizawa | |
| 16.04.2026 | Toufik Sahtali | 875 | 6373.90 | 7-6, 6-2 | Loss | 22.28 | 28.57% | ATP SINGLES / 16.04.2026 | Tunisia Monastir | |
| 15.04.2026 | Mohamed Ali Abibsi | 2153 | 6106.21 | 6-3, 6-2 | Win | 50.84 | 42.53% | ATP SINGLES / 15.04.2026 | Tunisia Monastir | |
| 13.04.2026 | Stefano Papagno | 2846 | 6009.75 | 6-2, 6-4 | Win | -49.06 | 41.88% | ATP SINGLES / 13.04.2026 | Tunisia Monastir | |
| 06.04.2026 | Anton Shepp | 637 | 6452.21 | 6-3, 6-1 | Loss | -0.65 | 13.23% | ATP SINGLES / 06.04.2026 | Tunisia Monastir | |
| 05.04.2026 | Yoan Naydenov | 4657 | 5696.72 | 6-0, 6-1 | Win | 0.00 | 39.38% | ATP SINGLES / 05.04.2026 | Tunisia Monastir | |
| 21.03.2026 | Axel Herberg Amoros | 2942 | 5993.58 | 6-1, 6-3 | Loss | -459.28 | 11.69% | ATP SINGLES / 21.03.2026 | Spain Tarragona | |
| 18.03.2026 | Ryan Nijboer | 475 | 6528.44 | 6-3, 6-2 | Loss | 54.34 | 14.28% | ATP SINGLES / 18.03.2026 | Spain Badalona | |
| 16.03.2026 | Peter Sychev | 6347 | 5013.96 | 2-6, 5-7 | Win | -546.95 | 33.76% | ATP SINGLES / 16.03.2026 | Tarragona | |
| 16.03.2026 | Noah Regas Luis | 2137 | 6110.48 | 7-6, 6-2 | Win | -9.89 | 33.76% | ATP SINGLES / 16.03.2026 | Spain Badalona | |
| 15.03.2026 | Nicolas Rafael Goldberg Alviani | 3544 | 5901.85 | 6-1, 6-1 | Win | -0.00 | 33.50% | ATP SINGLES / 15.03.2026 | Spain Badalona | |
| 04.03.2026 | Dominik Palan | 687 | 6430.78 | 7-5, 6-1 | Loss | 7.91 | 15.39% | ATP SINGLES / 04.03.2026 | Spain Torello | |
| 02.03.2026 | Saul Pacheco Benasayag | 2052 | 6124.17 | 3-6, 6-0, 1-0 | Win | -32.70 | 25.26% | ATP SINGLES / 02.03.2026 | Spain Torello | |
| 01.03.2026 | Niklas Grunewald | 3073 | 5972.11 | 6-2, 6-3 | Win | -52.88 | 30.08% | ATP SINGLES / 01.03.2026 | Spain Torello | |
| 28.02.2026 | Izan Corretja | 4264 | 5783.54 | 6-3, 6-2 | Win | -147.16 | 29.84% | ATP SINGLES / 28.02.2026 | Spain Torello | |
| 25.02.2026 | Samuel Heredia | 823 | 6389.33 | 6-2, 6-3 | Loss | -66.53 | 12.15% | ATP SINGLES / 25.02.2026 | Spain Villena | |
| 23.02.2026 | Michael Zhu | 1377 | 6246.87 | 6-7, 6-1, 1-0 | Win | 80.55 | 31.11% | ATP SINGLES / 23.02.2026 | Spain Villena | |
| 22.02.2026 | Sergio Ingles Garre | 2498 | 6058.03 | 6-3, 6-2 | Win | 2.66 | 28.50% | ATP SINGLES / 22.02.2026 | Spain Villena | |
| 21.02.2026 | Sergei Likhogrud | 5524 | 5430.52 | 6-4, 6-4 | Win | -677.35 | 28.28% | ATP SINGLES / 21.02.2026 | Spain Villena | |
| 16.02.2026 | Simone Agostini | 3540 | 5902.36 | 5-7, 3-6 | Win | -190.50 | 27.21% | ATP SINGLES / 16.02.2026 | Villena | |
| 16.02.2026 | Bekkhan Atlangeriev | 1505 | 6217.57 | 6-1, 6-2 | Loss | -270.30 | 6.80% | ATP SINGLES / 16.02.2026 | Spain Villena | |
| 14.02.2026 | Daniel De La Fuente Torres | 7678 | 3802.81 | 6-3, 6-2 | Win | -1137.53 | 26.79% | ATP SINGLES / 14.02.2026 | Spain Villena | |
| 26.12.2025 | Filip Cristian Jianu | 360 | 6593.52 | 6-1, 6-2 | Loss | 0.00 | 4.56% | ATP SINGLES / 26.12.2025 | Turkey Antalya | |
| 25.12.2025 | Nikola Jovic | 2178 | 6102.41 | 6-2, 6-3 | Win | 47.04 | 18.09% | ATP SINGLES / 25.12.2025 | Turkey Antalya | |
| 19.12.2025 | Ozan Baris | 443 | 6539.88 | 6-1, 6-2 | Loss | -0.00 | 4.32% | ATP SINGLES / 19.12.2025 | Turkey Antalya | |
| 18.12.2025 | Dragos Nicolae Madaras | 660 | 6442.60 | 6-4, 6-2 | Win | 372.23 | 17.14% | ATP SINGLES / 18.12.2025 | Turkey Antalya | |
| 17.12.2025 | Dinko Dinev | 1297 | 6265.43 | 6-3, 3-6, 6-4 | Win | 103.56 | 21.26% | ATP SINGLES / 17.12.2025 | Turkey Antalya | |
| 03.12.2025 | Dragos Nicolae Madaras | 660 | 6442.60 | 6-3, 6-4 | Loss | 21.88 | 8.91% | ATP SINGLES / 03.12.2025 | Turkey Antalya |