Stan Wawrinka defeated Martin Vassallo Arguello 2-6 7-5 6-2 in the Monte Carlo Masters round of 32 on clay. The result followed the form book — Stan Wawrinka came in defending last year's round of 64. Stan Wawrinka extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-22 | Wimbledon | R64 | grass | Stan Wawrinka | 6-3 6-2 6-2 |
| 2007-07-09 | Gstaad | R32 | clay | Martin Vassallo Arguello | 7-5 1-6 6-4 |
Averages from each player's recent completed matches (19 vs 20). ATP, WTA & Challenger.