Sam Querrey defeated Dominic Thiem 6-1 7-5 in the Acapulco quarter-final on hard. The upset overturned the form book — Dominic Thiem came in leading the head-to-head 3–1, defending the title. Sam Querrey narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-07-01 | Wimbledon | R128 | grass | Sam Querrey | 6-7(4) 7-6(1) 6-3 6-0 |
| 2018-10-22 | Vienna | R16 | hard | Dominic Thiem | 6-4 6-4 |
| 2017-05-15 | Rome Masters | R16 | clay | Dominic Thiem | 3-6 6-3 7-6(7) |
| 2016-02-22 | Acapulco | SF | hard | Dominic Thiem | 6-2 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About