Amanda Coetzer defeated Ai Sugiyama 6-3 2-6 6-2 in the Tokyo quarter-final on hard. The upset overturned the form book — Ai Sugiyama came in leading the head-to-head 4–1, defending the title. Amanda Coetzer narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-01-06 | Sydney | R32 | hard | Amanda Coetzer | 6-2 3-6 6-3 |
| 2002-08-04 | Los Angeles | R16 | hard | Ai Sugiyama | 6-1 7-6(4) |
| 2001-05-21 | Strasbourg | R16 | clay | Ai Sugiyama | 6-4 6-4 |
| 1999-05-24 | Roland Garros | R128 | clay | Ai Sugiyama | 7-5 6-1 |
| 1998-05-11 | Berlin | R16 | grass | Ai Sugiyama | 4-6 6-2 6-3 |
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 (7 vs 172). ATP, WTA & Challenger.