Head to head
1
Hard
1
1
Clay
0
Mariano Zabaleta's wins on the left · Sebastien Grosjean's on the right · bar lengths share one scale
All meetings (3)
| 2002 | St. Petersburg | Hard | R16 | Sebastien Grosjean | 6-3 6-1 |
| 2001 | US Open | Hard | R128 | Mariano Zabaleta | 6-4 6-3 6-4 |
| 1999 | Barcelona | Clay | R64 | Mariano Zabaleta | 6-7(6) 7-6(5) 6-1 |
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.