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 1–0, defending the title. Olga Puchkova claimed a first win over Zi Yan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-08 | Bangkok | R16 | hard | Zi Yan | 3-6 6-1 6-1 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (70 vs 52). ATP, WTA & Challenger.