Jose Acasuso defeated Nicolas Almagro 6-3 6-4 in the Buenos Aires quarter-final on clay. The upset overturned the form book — Nicolas Almagro came in leading the head-to-head 7–1, but Jose Acasuso had been the form player, winning 3 of their last 5 on clay. Jose Acasuso narrowed the head-to-head to 7–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-02-14 | Buenos Aires | QF | clay | Nicolas Almagro | 7-5 6-3 |
| 2008-02-25 | Acapulco | SF | hard | Nicolas Almagro | 6-4 3-6 7-5 |
| 2008-01-07 | Auckland | R32 | hard | Nicolas Almagro | 6-3 6-4 |
| 2007-05-14 | Hamburg Masters | R16 | clay | Nicolas Almagro | 6-2 6-3 |
| 2006-05-08 | Rome Masters | R32 | clay | Nicolas Almagro | 6-4 2-6 6-4 |
| 2006-02-27 | Acapulco | R16 | hard | Nicolas Almagro | 6-3 RET |
| 2005-07-04 | Bastad | R32 | clay | Nicolas Almagro | 6-4 6-1 |
| 2005-05-16 | St. Poelten | R16 | clay | Jose Acasuso | 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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About