 Japan: M15 Nishi-Tokyo - Singles - Main |
|---|
| 1/16-finals | Koyama H. | Sach T. | 0:2 (2:6, 3:6) | dettagli | 18.03.2025 |
| Japan: M15 Hinode - Singles - Main |
|---|
| 1/16-finals | Kawahashi Y. | Koyama H. | 2:0 (6:2, 6:3) | dettagli | 12.03.2025 |
 Australia: Australian Open - Singles - Main |
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| 1/32-finals | Koyama H. | Santamarta Roig A. | 1:2 (7:65, 3:6, 0:6) | dettagli | 19.01.2025 |
| Australia: Australian Open - Singles - Qualification |
|---|
| Final | Koyama H. | Batin T. | 2:0 (6:1, 6:4) | dettagli | 16.01.2025 |
| Semi-finals | Koyama H. | Kosinski F. | 2:1 (5:7, 6:0, 7:5) | dettagli | 15.01.2025 |
| Japan: M25 Sapporo - Singles - Main |
|---|
| 1/8-finals | Koyama H. | Saitoh K. | 1:2 (0:6, 6:4, 3:6) | dettagli | 05.09.2024 |
| 1/16-finals | Chung H. | Koyama H. | 0:2 (5:7, 1:6) | dettagli | 03.09.2024 |
| Japan: M15 Tokyo 2 - Singles - Main |
|---|
| 1/16-finals | Miyoshi K. | Koyama H. | 2:0 (6:1, 6:2) | dettagli | 10.07.2024 |
| Japan: M15 Tokyo - Singles - Main |
|---|
| 1/16-finals | Koyama H. | Matsumura R. | 0:2 (4:6, 5:7) | dettagli | 03.07.2024 |
