Donald Young defeated Stan Wawrinka 7-6 3-6 2-6 6-3 7-6 in the US Open round of 64 on hard. The upset overturned the form book — Stan Wawrinka came in leading the head-to-head 3–1, defending last year's quarter-final. Donald Young narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-30 | Washington | R64 | hard | Donald Young | 6-4 6-7(5) 7-6(3) |
| 2016-10-24 | Basel | R16 | hard | Stan Wawrinka | 7-6(4) 6-7(3) 6-4 |
| 2015-08-31 | US Open | R16 | hard | Stan Wawrinka | 6-4 1-6 6-3 6-4 |
| 2011-10-09 | Shanghai Masters | R32 | hard | Stan Wawrinka | 6-7(5) 7-6(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
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
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.: 9 days rest · 1 match (14d). Higher means fresher. About