Stan Wawrinka defeated Mario Ancic 7-6 6-4 in the New Haven round of 64 on hard. The upset overturned the form book — Mario Ancic came in leading the head-to-head 2–0. Stan Wawrinka claimed a first win over Mario Ancic in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-26 | Wimbledon | R32 | grass | Mario Ancic | 7-6(5) 6-7(5) 6-1 6-3 |
| 2006-01-09 | Auckland | SF | hard | Mario Ancic | 6-3 6-1 |
Averages from each player's recent completed matches (19 vs 20). ATP, WTA & Challenger.