Dong Hak Sin defeated Seung Jae Lee 6-3 7-5 in the Korea F6 round of 32 on hard. The result followed the form book — Dong Hak Sin came in leading the head-to-head 1–0. Dong Hak Sin extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-04-28 | Korea F2 | Q32 | hard | Dong Hak Sin | 6-3 2-6 7-6(6) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.