Yu Chang defeated Greg Ouellette 6-4 6-2 in the USA F19 qualifying round on hard. The upset overturned the form book — Greg Ouellette came in leading the head-to-head 1–0. Yu Chang claimed a first win over Greg Ouellette in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-07-12 | USA F18 | R32 | clay | Greg Ouellette | 7-6(6) 6-0 |
Averages over each player's completed matches in the selected window (1 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About