Ko Suzuki defeated G. J. Kim 6-3 6-1 in the M25 Harmon 2 round of 16 on hard. The upset overturned the form book — G. J. Kim came in ranked #1039, leading the head-to-head 1–0. Ko Suzuki 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 |
|---|---|---|---|---|---|
| 2025-11-26 | M15 Gimcheon 2 | R32 | hard | G. J. Kim | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.