Sam Querrey defeated Stan Wawrinka 6-3 7-6 in the Beijing round of 16 on hard. The upset overturned the form book — Stan Wawrinka came in leading the head-to-head 6–2. Sam Querrey narrowed the head-to-head to 6–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-06-20 | London | R16 | carpet | Sam Querrey | 7-5 6-7(3) 6-1 |
| 2018-06-18 | Queen's Club | R16 | grass | Sam Querrey | 7-5 6-7 6-1 |
| 2017-05-22 | Geneva | QF | clay | Stan Wawrinka | 4-6 7-5 6-2 |
| 2014-06-12 | London | R16 | carpet | Stan Wawrinka | 6-2 6-2 |
| 2014-06-09 | Queen's Club | R16 | grass | Stan Wawrinka | 6-2 6-2 |
| 2013-01-14 | Australian Open | R32 | hard | Stan Wawrinka | 7-6 7-5 6-4 |
| 2010-08-30 | US Open | R16 | hard | Stan Wawrinka | 7-6 6-7 7-5 4-6 6-4 |
| 2009-03-12 | Indian Wells Masters | R32 | hard | Stan Wawrinka | 2-6 7-5 7-6 |
Averages over each player's completed matches in the selected window (200 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Wawrinka S.: 7 days rest · 1 match, 29 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About