By surface
| Surface | Hans Joachim Ploetz | Koji Watanabe |
|---|---|---|
| Grass | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1969-06-23 | ATP | Wimbledon | Round of 64 | Grass | Hans Joachim Ploetz | 9-7 | 3-6 | 9-7 | 9-7 |
| Surface | Hans Joachim Ploetz | Koji Watanabe |
|---|---|---|
| Grass | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1969-06-23 | ATP | Wimbledon | Round of 64 | Grass | Hans Joachim Ploetz | 9-7 | 3-6 | 9-7 | 9-7 |