Aiko Nakamura defeated Tomoko Yonemura 7-6 7-5 in the Bali round of 32 on hard. The upset overturned the form book — Tomoko Yonemura came in leading the head-to-head 2–1, but Aiko Nakamura had been the form player, winning 4 of their last 8 on hard. Aiko Nakamura narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-27 | Gifu 50K | F | carpet | Aiko Nakamura | 6-1 6-4 |
| 2008-05-05 | Fukuoka 50K | SF | grass | Tomoko Yonemura | 6-2 3-6 7-6(0) |
| 2001-09-17 | Osaka 10K | R16 | hard | Tomoko Yonemura | 6-3 6-0 |
Averages over each player's completed matches in the selected window (66 vs 2). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About