By surface
| Surface | Ai Sugiyama | Saori Obata |
|---|---|---|
| Hard | 3 | 1 |
All meetings (4)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2004-01-19 | WTA | Australian Open | Round of 64 | Hard | Saori Obata | 4-6 | 4-6 | |||
| 2003-08-04 | WTA | Los Angeles | Round of 32 | Hard | Ai Sugiyama | 2-6 | 6-3 | 6-3 | ||
| 2002-09-09 | WTA | Shanghai | Round of 32 | Hard | Ai Sugiyama | 6-4 | 6-2 | |||
| 2002-02-17 | WTA | Memphis | Round of 32 | Hard | Ai Sugiyama | 7-66 | 6-4 |