Hyun Woo Nam defeated Yu Chang 2-6 7-6 7-5 in the Japan F2 round of 32 on hard. The upset overturned the form book — Yu Chang came in leading the head-to-head 1–0. Hyun Woo Nam claimed a first win over Yu Chang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-03-25 | Japan F3 | F | hard | Yu Chang | 6-2 6-1 |
Averages over each player's completed matches in the selected window (13 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