Yung Jan Chan defeated Tamarine Tanasugarn 6-2 4-6 7-6 in the Taipei 100K qualifying round on hard. The upset overturned the form book — Tamarine Tanasugarn came in leading the head-to-head 3–1, but Yung Jan Chan had been the form player, winning 3 of their last 5 on hard. Yung Jan Chan narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-11-21 | Toyota 75K | SF | carpet | Tamarine Tanasugarn | 1-6 6-2 6-4 |
| 2011-05-02 | Fukuoka 50K | F | grass | Tamarine Tanasugarn | 6-4 5-7 7-5 |
| 2007-11-26 | Xiamen 75K | F | hard | Yung Jan Chan | 2-6 6-2 6-1 |
| 2007-02-05 | Pattaya | R32 | hard | Tamarine Tanasugarn | 6-2 6-7 6-4 |
Averages over each player's completed matches in the selected window (74 vs 74). 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