Matija Pecotic defeated Thai Son Kwiatkowski 2-6 7-5 6-4 in the Cleveland CH qualifying round 2 on hard. The upset overturned the form book — Thai Son Kwiatkowski came in ranked #1625, leading the head-to-head 2–0. Matija Pecotic claimed a first win over Thai Son Kwiatkowski in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-03-15 | M25 Santo Domingo 2 | QF | hard | Thai Son Kwiatkowski | 6-2 6-3 |
| 2015-01-05 | USA F1 | R32 | clay | Thai Son Kwiatkowski | 6-3 6-3 |
Averages over each player's completed matches in the selected window (42 vs 103). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About