Nicolas Massu defeated Juan Monaco 2-6 6-2 7-5 in the Costa Do Sauipe semi-final on hard. The upset overturned the form book — Juan Monaco came in leading the head-to-head 3–1, defending last year's round of 32. Nicolas Massu narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-02-01 | Santiago | R32 | clay | Juan Monaco | 6-3 6-4 |
| 2007-02-26 | Acapulco | R32 | hard | Nicolas Massu | 7-6(4) 7-5 |
| 2004-07-05 | Bastad | R32 | clay | Juan Monaco | 4-6 6-3 6-2 |
| 2004-02-23 | Costa Do Sauipe | R32 | hard | Juan Monaco | 6-4 6-2 |
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.