Nicolas Massu defeated Nicolas Almagro 7-6 6-3 in the Costa Do Sauipe quarter-final on hard. The upset overturned the form book — Nicolas Almagro came in leading the head-to-head 4–0, defending last year's round of 32. Nicolas Massu claimed a first win over Nicolas Almagro in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-01-19 | Australian Open | R128 | hard | Nicolas Almagro | 6-4 6-4 3-6 5-7 6-3 |
| 2008-02-25 | Acapulco | QF | hard | Nicolas Almagro | 4-6 6-3 6-3 |
| 2008-02-11 | Costa Do Sauipe | R32 | hard | Nicolas Almagro | 6-3 6-2 |
| 2006-05-08 | Rome Masters | R64 | clay | Nicolas Almagro | 7-5 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 (143 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About