Nicolas Massu defeated Jose Acasuso 6-4 6-0 6-2 in the US Open round of 128 on hard. The upset overturned the form book — Jose Acasuso came in leading the head-to-head 3–2, defending last year's round of 128. Nicolas Massu narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-05-20 | Dusseldorf | RR | clay | Jose Acasuso | 6-3 6-4 |
| 2006-07-10 | Bastad | R16 | clay | Nicolas Massu | 6-4 6-2 |
| 2006-01-30 | Vina del Mar | F | clay | Jose Acasuso | 6-4 6-3 |
| 2005-10-24 | Basel | R32 | hard | Jose Acasuso | 4-6 7-6(3) 6-4 |
| 2003-09-22 | Palermo | R16 | clay | Nicolas Massu | 6-2 3-1 |
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