Head to head
2
Hard
0
3
Clay
3
1
Carpet
0
Nicolas Massu's wins on the left · Mariano Zabaleta's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 2006 | Bastad | Clay | R32 | Nicolas Massu | 6-4 3-1 RET |
| 2004 | Basel | Carpet | R16 | Nicolas Massu | 6-2 6-4 |
| 2004 | Kitzbuhel | Clay | QF | Nicolas Massu | 7-6(4) 7-6(6) |
| 2004 | Rome Masters | Clay | QF | Mariano Zabaleta | 6-1 7-5 |
| 2003 | Kitzbuhel | Clay | SF | Nicolas Massu | 6-2 6-1 |
| 2003 | Bastad | Clay | R32 | Mariano Zabaleta | 2-6 6-3 6-3 |
| 2001 | Casablanca | Clay | R16 | Mariano Zabaleta | 6-4 3-6 6-1 |
| 2000 | Shanghai | Hard | R32 | Nicolas Massu | 6-4 7-6(5) |
| 2000 | Davis Cup G1 SF: CHI vs ARG | Hard | RR | Nicolas Massu | 5-7 6-2 6-7(1) 1-3 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.