Ai Sugiyama defeated Ayumi Morita 4-6 6-4 6-0 in the Doha round of 32 on hard. The upset overturned the form book — Ayumi Morita came in leading the head-to-head 2–1. Ai Sugiyama narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-04-14 | Charleston | R64 | clay | Ai Sugiyama | 6-4 6-1 |
| 2007-09-24 | Seoul | R32 | hard | Ayumi Morita | 7-5 6-3 |
| 2007-06-11 | Birmingham | R32 | grass | Ayumi Morita | 6-4 1-6 6-2 |
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 (67 vs 189). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About