Su Jeong Jang defeated Riko Sawayanagi 6-3 6-3 in the Karuizawa 25K round of 16 on grass. The result followed the form book — Su Jeong Jang came in leading the head-to-head 2–1. Su Jeong Jang extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-05-18 | Seoul $50K | F | hard | Riko Sawayanagi | 6-4 6-4 |
| 2014-05-26 | Changwon 25K | R16 | hard | Su Jeong Jang | 6-0 6-2 |
| 2013-06-10 | Gimcheon 10K | R32 | hard | Su Jeong Jang | 0-6 6-4 6-2 |
Averages over each player's completed matches in the selected window (200 vs 86). 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