Yeongseok Jeong defeated G. J. Kim 6-3 6-1 in the M15 Anseong 1 round of 32 on clay. The upset overturned the form book — G. J. Kim came in ranked #1039, leading the head-to-head 1–0. Yeongseok Jeong claimed a first win over G. J. Kim in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-06-08 | M25 Daegu 1 | R16 | hard | G. J. Kim | 6-1 2-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.