Yu Chang defeated Hyun Woo Nam 6-2 6-1 in the Japan F3 final on hard. The upset overturned the form book — Hyun Woo Nam came in leading the head-to-head 1–0. Yu Chang claimed a first win over Hyun Woo Nam in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-03-18 | Japan F2 | R32 | hard | Hyun Woo Nam | 2-6 7-6(7) 7-5 |
Averages over each player's completed matches in the selected window (1 vs 13). 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