Kai Chen Chang defeated Kaia Kanepi 6-0 2-6 6-2 in the US Open round of 128 on hard. The result followed the form book — Kai Chen Chang came in leading the head-to-head 1–0. Kai Chen Chang extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-09-28 | Tokyo | R64 | hard | Kai Chen Chang | 6-3 6-3 |
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 (113 vs 199). ATP, WTA & Challenger.