By surface
| Surface | Riccardo Roberto | Yan Ermak |
|---|---|---|
| Clay | 1 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1978-11-27 | WTA | Fed Cup WG R2: TCH vs INA | Round Robin | — | Renata Tomanova | 3-6 | 7-9 | |||
| 1975-05-19 | WTA | Hamburg | Round of 16 | Clay | Renata Tomanova | 3-6 | 5-7 |