Juan Martin del Potro defeated Stan Wawrinka 7-6 6-4 in the Estoril semi-final on clay. The upset overturned the form book — Stan Wawrinka came in leading the head-to-head 3–2, but Juan Martin del Potro had been the form player, winning 4 of their last 7 on clay. Juan Martin del Potro narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-08-29 | US Open | QF | hard | Stan Wawrinka | 7-6 4-6 6-3 6-2 |
| 2016-06-27 | Wimbledon | R64 | grass | Juan Martin del Potro | 3-6 6-3 7-6 6-3 |
| 2009-04-27 | Rome Masters | R16 | clay | Juan Martin del Potro | 6-2 6-7 6-3 |
| 2008-06-23 | Wimbledon | R64 | grass | Stan Wawrinka | 7-6 6-3 7-5 |
| 2006-07-24 | Umag | QF | clay | Stan Wawrinka | 6-1 2-6 6-4 |
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.: 2 days rest · 2 matches, 45 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 clay field, opponent-adjusted over 52 weeks). About