Jung Woong Na defeated Woong Sun Jun 6-3 6-4 in the China F1 round of 32 on hard. The upset overturned the form book — Woong Sun Jun came in leading the head-to-head 1–0, but Jung Woong Na had been the form player, winning 4 of their last 6 on hard. Jung Woong Na claimed a first win over Woong Sun Jun in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-05-21 | Korea F2 | R32 | hard | Woong Sun Jun | 7-6(7) 7-6(7) |
Averages over each player's completed matches in the selected window (62 vs 6). 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