Natthasith Kunsuwan defeated Thanapet Chanta 7-6 4-6 10-3 in the M15 Nonthaburi 1 q64 on hard. The upset overturned the form book — Thanapet Chanta came in leading the head-to-head 1–0. Natthasith Kunsuwan claimed a first win over Thanapet Chanta in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-10-04 | M15 Monastir 38 | Q16 | hard | Thanapet Chanta | 6-2 6-4 |
Averages over each player's completed matches in the selected window (77 vs 173). 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