Petra Martic defeated Kai Chen Chang 6-4 6-4 in the Guangzhou round of 32 on hard. The upset overturned the form book — Kai Chen Chang came in leading the head-to-head 1–0, defending last year's round of 16. Petra Martic claimed a first win over Kai Chen Chang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-01-16 | Australian Open | R128 | hard | Kai Chen Chang | 6-4 6-2 |
Averages over each player's completed matches in the selected window (200 vs 128). 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