Ai Sugiyama defeated Saori Obata 2-6 6-3 6-3 in the Los Angeles round of 32 on hard. The result followed the form book — Ai Sugiyama came in leading the head-to-head 2–1, defending last year's semi-final. Ai Sugiyama extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-01-19 | Australian Open | R64 | hard | Saori Obata | 6-4 6-4 |
| 2002-09-09 | Shanghai | R32 | hard | Ai Sugiyama | 6-4 6-2 |
| 2002-02-17 | Memphis | R32 | hard | Ai Sugiyama | 7-6(6) 6-4 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (172 vs 15). ATP, WTA & Challenger.