Head to head
1
Hard
1
2
Clay
0
Roger Federer's wins on the left · Mariano Zabaleta's on the right · bar lengths share one scale
All meetings (4)
| 2005 | Miami Masters | Hard | R32 | Roger Federer | 6-2 5-7 6-3 |
| 2003 | Rome Masters | Clay | R32 | Roger Federer | 7-6(4) 6-2 |
| 2002 | Monte Carlo Masters | Clay | R64 | Roger Federer | 7-6(2) 6-4 |
| 2000 | Miami Masters | Hard | R64 | Mariano Zabaleta | 6-4 7-6(7) |
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.