Krittin Koaykul defeated Thanapet Chanta 6-3 6-4 in the M15 Nakhon Si Thammarat 1 round of 32 on hard. The upset overturned the form book — Thanapet Chanta came in ranked #876, leading the head-to-head 2–0. Krittin Koaykul claimed a first win over Thanapet Chanta in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-07-11 | M15 Nakhon Si Thammarat 5 | R16 | hard | Thanapet Chanta | 6-2 6-2 |
| 2022-06-16 | M15 Chiang Rai 5 | R32 | hard | Thanapet Chanta | 6-4 7-6(7) |
Averages over each player's completed matches in the selected window (1 vs 20). 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. Small sample — read as indicative. About