Natthasith Kunsuwan defeated Daisuke Sumizawa 2-6 6-3 10-7 in the M15 Monastir 36 q16 on hard. The upset overturned the form book — Daisuke Sumizawa came in leading the head-to-head 1–0, but Natthasith Kunsuwan had been the form player, winning 5 of their last 10 on hard. Natthasith Kunsuwan claimed a first win over Daisuke Sumizawa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-11-25 | M15 Nonthaburi 1 | Q32 | hard | Daisuke Sumizawa | 6-7(4) 7-6(5) 11-9 |
Averages over each player's completed matches in the selected window (2 vs 15). 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