Honori Koyama leads 3 to 1 over 4 singles meetings since 2022. Last meeting on 22/07/2024 at W15 Sapporo.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 22/07/2024 | W15 Sapporo | Qualifying 1 | hard | Koyama | |
| 14/05/2024 | W15 Toyama | Qualifying 1 | hard | Koyama | |
| 17/03/2024 | W15 Hinode | Qualifying 1 | hard | Koyama | |
| 26/09/2022 | W25 Nanao | Qualifiers | carpet | Shigeta | 3-6 4-6 |
| hard | Shigeta 0 - 3 Koyama |
| carpet | Shigeta 1 - 0 Koyama |
| 2024 | Shigeta 0 - 3 Koyama |
| 2022 | Shigeta 1 - 0 Koyama |
23 wins, 34 losses since 2021 (40.4%).
Last matches: D V V D V
43 wins, 50 losses since 2021 (46.2%).
Last matches: D V D D V
Honori Koyama leads 3 to 1 over 4 singles meetings since 2022.
On 22/07/2024, at W15 Sapporo (Qualifying 1): Honori Koyama won.