Sam Querrey defeated Gilles Simon 6-4 6-3 6-4 in the US Open round of 128 on hard. The upset overturned the form book — Gilles Simon came in leading the head-to-head 6–2, defending last year's round of 64. Sam Querrey narrowed the head-to-head to 6–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-01-07 | Sydney | R16 | hard | Gilles Simon | 7-6(5) 6-7(6) 6-4 |
| 2018-05-28 | Roland Garros | R64 | clay | Gilles Simon | 1-6 7-6(3) 6-4 6-1 |
| 2015-06-21 | Nottingham | QF | grass | Sam Querrey | 5-7 7-6(8) 6-4 |
| 2013-09-16 | Metz | QF | hard | Gilles Simon | 6-4 7-6(1) |
| 2013-05-27 | Roland Garros | R32 | clay | Gilles Simon | 2-6 6-3 2-6 7-6(2) 6-2 |
| 2010-10-04 | Beijing | R32 | hard | Gilles Simon | 6-3 3-6 6-2 |
| 2009-05-17 | Dusseldorf | RR | clay | Sam Querrey | 7-5 6-3 |
| 2008-07-14 | Indianapolis | SF | hard | Gilles Simon | 6-3 4-6 6-4 |
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