Young Hoon Jeong defeated Jung Woong Na 6-1 6-3 in the Korea F7 qualifying round on clay. The upset overturned the form book — Jung Woong Na came in leading the head-to-head 1–0. Young Hoon Jeong claimed a first win over Jung Woong Na in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-06-24 | Korea F8 | R32 | hard | Jung Woong Na | 6-2 6-2 |
Averages over each player's completed matches in the selected window (15 vs 62). 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