Watsachol Sawasdee defeated Kamonwan Buayam 6-7 6-1 10-8 in the W25 Nonthaburi q64 on hard. The upset overturned the form book — Kamonwan Buayam came in leading the head-to-head 1–0. Watsachol Sawasdee claimed a first win over Kamonwan Buayam in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-04-21 | W15 Chiang Rai 1 | R16 | hard | Kamonwan Buayam | 7-6(2) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.