By surface
| Surface | Stephan Koenigsfest | Christopher Diaz |
|---|---|---|
| Hard | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-08-14 | WTA | Toronto | Round of 16 | Hard | Yvonne Vermaak | 6-4 | 4-6 | 4-6 |
| Surface | Stephan Koenigsfest | Christopher Diaz |
|---|---|---|
| Hard | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-08-14 | WTA | Toronto | Round of 16 | Hard | Yvonne Vermaak | 6-4 | 4-6 | 4-6 |