Kai Chen Chang defeated Vania King 6-1 6-2 in the Tianjin round of 32 on hard. The upset overturned the form book — Vania King came in leading the head-to-head 1–0. Kai Chen Chang claimed a first win over Vania King in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-07-16 | San Diego | R32 | hard | Vania King | 6-1 6-4 |
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 (45 vs 47). ATP, WTA & Challenger.