Head to head
0
Hard
2
3
Clay
2
Gaston Gaudio's wins on the left · Lleyton Hewitt's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 2007 | Roland Garros | Clay | R64 | Lleyton Hewitt | 4-6 3-6 6-2 6-4 6-2 |
| 2004 | Masters Cup | Hard | RR | Lleyton Hewitt | 6-2 6-1 |
| 2004 | Roland Garros | Clay | QF | Gaston Gaudio | 6-3 6-2 6-2 |
| 2004 | World Team Championship | Clay | RR | Gaston Gaudio | 6-3 5-7 7-6(5) |
| 2004 | Monte Carlo Masters | Clay | R32 | Lleyton Hewitt | 1-6 7-6(5) 6-1 |
| 2002 | Barcelona | Clay | SF | Gaston Gaudio | 6-4 7-5 |
| 2000 | Miami Masters | Hard | R64 | Lleyton Hewitt | 7-6(4) 6-7(6) 6-3 |
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.