Jae Won Choi defeated Seung Jae Lee 6-2 6-3 in the Korea F8 round of 32 on hard. The upset overturned the form book — Seung Jae Lee came in leading the head-to-head 1–0. Jae Won Choi claimed a first win over Seung Jae Lee in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-08-11 | Korea F10 | R32 | hard | Seung Jae Lee | 3-6 7-6(4) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.