By surface
| Surface | Stephan Koenigsfest | Bobby Cozzillio |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-05-05 | WTA | Perugia | Round of 64 | Clay | Yvonne Vermaak | 1-6 | 1-6 |
| Surface | Stephan Koenigsfest | Bobby Cozzillio |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-05-05 | WTA | Perugia | Round of 64 | Clay | Yvonne Vermaak | 1-6 | 1-6 |