Na Lae Han defeated Su Jeong Jang 7-6 4-6 6-3 in the Seoul round of 32 on hard. The upset overturned the form book — Su Jeong Jang came in leading the head-to-head 1–0, defending last year's quarter-final, but Na Lae Han had been the form player, winning 3 of their last 8 on hard. Na Lae Han claimed a first win over Su Jeong Jang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-04-17 | Zhengzhou | R32 | hard | Su Jeong Jang | 6-4 6-1 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (80 vs 161). ATP, WTA & Challenger.