Krittin Koaykul defeated Natthayut Nithithananont 6-2 6-3 in the M15 Nakhon Si Thammarat 5 round of 32 on hard. The result followed the form book — Krittin Koaykul came in leading the head-to-head 1–0. Krittin Koaykul extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-06-19 | M15 Chiang Rai 6 | Q64 | hard | Krittin Koaykul | 6-2 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.