Oh Hee Kwon defeated Tsung Hua Yang 6-0 2-6 6-3 in the Indonesia F1 qualifying round on hard. The upset overturned the form book — Tsung Hua Yang came in leading the head-to-head 2–0, but Oh Hee Kwon had been the form player, winning 4 of their last 6 on hard. Oh Hee Kwon claimed a first win over Tsung Hua Yang in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-31 | Thailand F3 | R16 | hard | Tsung Hua Yang | 6-3 7-6(3) |
| 2009-07-20 | Korean Rep F6 | R16 | hard | Tsung Hua Yang | 6-3 6-4 |
Averages over each player's completed matches in the selected window (17 vs 200). 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. About