By surface
| Surface | Betsy Nagelsen | Kumiko Okamoto |
|---|---|---|
| Hard | 1 | 1 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990-04-10 | WTA | Tokyo Japan Open | Round of 16 | Hard | Kumiko Okamoto | 1-6 | 2-6 | |||
| 1987-04-14 | WTA | Tokyo Japan Open | Quarterfinal | Hard | Betsy Nagelsen | 7-6 | 6-4 |