Ayumi Morita defeated Yung Jan Chan 6-4 6-4 in the Shenzhen round of 32 on hard. The upset overturned the form book — Yung Jan Chan came in leading the head-to-head 5–1. Ayumi Morita narrowed the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-02 | Taipei 100K | F | hard | Yung Jan Chan | 6-4 2-6 6-2 |
| 2007-05-07 | Fukuoka 50K | R16 | carpet | Yung Jan Chan | 4-6 6-2 6-3 |
| 2007-04-30 | Gifu 50K | F | carpet | Yung Jan Chan | 6-3 6-1 |
| 2006-09-25 | Tokyo 50K | F | hard | Ayumi Morita | 3-6 6-3 6-4 |
| 2006-05-08 | Fukuoka 50K | F | grass | Yung Jan Chan | 6-3 4-6 6-1 |
| 2005-05-09 | Fukuoka 50K | F | grass | Yung Jan Chan | 6-3 6-2 |
Averages over each player's completed matches in the selected window (133 vs 33). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About