By surface
| Surface | Naoko Sawamatsu | Petra Thoren |
|---|---|---|
| Hard | 3 | 0 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1993-01-18 | WTA | Australian Open | Round of 64 | Hard | Naoko Sawamatsu | 6-1 | 7-5 | |||
| 1992-03-02 | WTA | Boca Raton | Round of 32 | Hard | Naoko Sawamatsu | 7-6 | 6-4 | |||
| 1991-08-05 | WTA | Montreal | Round of 32 | Hard | Naoko Sawamatsu | 6-4 | 5-7 | 6-2 |