Krittin Koaykul defeated Chanchai Sookton Eng 2-6 6-4 10-5 in the M25 Chiang Rai 2 q16 on hard. The upset overturned the form book — Chanchai Sookton Eng came in leading the head-to-head 2–0, but Krittin Koaykul had been the form player, winning 6 of their last 10 on hard. Krittin Koaykul claimed a first win over Chanchai Sookton Eng in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-03-22 | M25 Canberra 3 | Q16 | clay | Chanchai Sookton Eng | 6-2 6-4 |
| 2022-02-16 | M25 Canberra 2 | R32 | hard | Chanchai Sookton Eng | 6-4 5-7 7-5 |
Averages over each player's completed matches in the selected window (99 vs 38). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About