By surface
| Surface | Riccardo Roberto | Sonoe Yonezawa |
|---|---|---|
| Clay | 2 | 0 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1980-11-12 | WTA | Kyoto | Quarterfinal | — | Renata Tomanova | 4-6 | 5-7 | |||
| 1980-10-13 | WTA | Nagoya | Round of 16 | Clay | Renata Tomanova | 2-6 | 1-6 | |||
| 1978-05-22 | WTA | Rome | Round of 32 | Clay | Renata Tomanova | 0-6 | 3-6 |