Sam Querrey defeated Guido Pella 7-6 6-1 in the Chengdu round of 32 on hard. The upset overturned the form book — Guido Pella came in leading the head-to-head 2–1, defending last year's semi-final. Sam Querrey narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-21 | Geneva | R16 | clay | Guido Pella | 7-5 6-7(6) 7-6(4) |
| 2018-04-09 | Houston | R16 | clay | Guido Pella | 2-6 7-6(4) 7-6(3) |
| 2013-08-26 | US Open | R128 | hard | Sam Querrey | 7-6(3) 4-6 6-1 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 (145 vs 185). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About