By surface
| Surface | Koji Watanabe | R Campbell |
|---|---|---|
| Grass | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1968-12-30 | ATP | Hobart | Round of 32 | Grass | Koji Watanabe | 7-5 | 6-2 |
| Surface | Koji Watanabe | R Campbell |
|---|---|---|
| Grass | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1968-12-30 | ATP | Hobart | Round of 32 | Grass | Koji Watanabe | 7-5 | 6-2 |