By surface
| Surface | Kenichi Hirai | Sadao Kosugi |
|---|
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1974-10-13 | ATP | Tokyo | Round of 64 | — | Kenichi Hirai | 6-3 | 6-4 |
| Surface | Kenichi Hirai | Sadao Kosugi |
|---|
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1974-10-13 | ATP | Tokyo | Round of 64 | — | Kenichi Hirai | 6-3 | 6-4 |