By surface
| Surface | Martin Koening | Yan Ermak |
|---|---|---|
| Clay | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1973-04-16 | WTA | St Petersburg | Round of 32 | Clay | Lynn Epstein | 6-1 | 6-7 | 5-7 |
| Surface | Martin Koening | Yan Ermak |
|---|---|---|
| Clay | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1973-04-16 | WTA | St Petersburg | Round of 32 | Clay | Lynn Epstein | 6-1 | 6-7 | 5-7 |