Olga Puchkova defeated Zi Yan 2-6 6-3 6-3 in the Guangzhou round of 32 on hard. The upset overturned the form book — Zi Yan came in leading the head-to-head 2–0, defending the title. Olga Puchkova claimed a first win over Zi Yan in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-20 | Dothan AL 75K | R16 | clay | Zi Yan | 7-5 6-3 |
| 2007-10-08 | Bangkok | R16 | hard | Zi Yan | 3-6 6-1 6-1 |
Averages over each player's completed matches in the selected window (70 vs 52). 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