Tian Tian Sun defeated Zi Yan 6-4 6-4 in the Shanghai 25K qualifying round on hard. Tian Tian Sun extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-06-06 | Beijing 1 50K | QF | hard | Zi Yan | 7-6(3) 1-6 6-2 |
| 2003-05-05 | Fukuoka 50K | QF | grass | Zi Yan | 6-4 7-6(3) |
| 2001-05-28 | Baotau 10K | R16 | clay | Tian Tian Sun | 6-4 6-2 |
| 2000-09-11 | Hohhot 10K | QF | clay | Tian Tian Sun | 6-1 6-3 |
Averages over each player's completed matches in the selected window (28 vs 52). 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. About