Juan Ignacio Chela defeated Stan Wawrinka 6-2 6-2 in the Buenos Aires semi-final on clay. The upset overturned the form book — Stan Wawrinka came in leading the head-to-head 4–1. Juan Ignacio Chela narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-08-30 | US Open | R64 | hard | Stan Wawrinka | 7-5 6-3 6-4 |
| 2007-10-28 | Paris Masters | R32 | hard | Stan Wawrinka | 6-3 6-1 |
| 2007-08-27 | US Open | R16 | hard | Juan Ignacio Chela | 4-6 6-2 7-6(6) 1-6 6-4 |
| 2007-07-16 | Stuttgart | SF | grass | Stan Wawrinka | 6-7(2) 6-4 6-1 |
| 2006-08-28 | US Open | R128 | hard | Stan Wawrinka | 6-7(3) 6-4 6-4 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 (68 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Wawrinka S.: 12 days rest · 1 match (14d). Higher means fresher. About