Chan Yeong Oh defeated Suk Hyun Choo 4-6 6-2 10-8 in the M25 Changwon 1 q16 on hard. The upset overturned the form book — Suk Hyun Choo came in leading the head-to-head 1–0. Chan Yeong Oh claimed a first win over Suk Hyun Choo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-08-21 | M15 Changwon 1 | Q64 | hard | Suk Hyun Choo | 2-6 6-3 10-7 |