Head to head
0
Hard
1
2
Clay
2
1
Carpet
0
Jose Acasuso's wins on the left · Nicolas Massu's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 2007 | World Team Championship | Clay | RR | Jose Acasuso | 6-3 6-4 |
| 2006 | Bastad | Clay | R16 | Nicolas Massu | 6-4 6-2 |
| 2006 | Vina del Mar | Clay | F | Jose Acasuso | 6-4 6-3 |
| 2005 | Basel | Carpet | R32 | Jose Acasuso | 4-6 7-6(3) 6-4 |
| 2004 | US Open | Hard | R128 | Nicolas Massu | 6-4 6-0 6-2 |
| 2003 | Palermo | Clay | R16 | Nicolas Massu | 6-2 3-1 RET |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.