Na Lae Han defeated Su Jeong Jang 6-3 6-2 in the Yeong Wol 10K round of 16 on hard. The upset overturned the form book — Su Jeong Jang came in leading the head-to-head 4–1, but Na Lae Han had been the form player, winning 5 of their last 10 on hard. Na Lae Han narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-04-02 | W25 Kofu | F | hard | Su Jeong Jang | 2-6 6-3 6-2 |
| 2017-04-17 | Zhengzhou | R32 | hard | Su Jeong Jang | 6-4 6-1 |
| 2014-09-15 | Seoul | R32 | hard | Na Lae Han | 7-6 4-6 6-3 |
| 2013-06-10 | Gimcheon 10K | QF | hard | Su Jeong Jang | 6-2 6-2 |
| 2010-10-25 | Yeong Wol 10K | R16 | hard | Su Jeong Jang | 6-0 2-0 |
Averages over each player's completed matches in the selected window (81 vs 187). 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