Head to head
2
Hard
1
Jan-Michael Gambill's wins on the left · Gaston Gaudio's on the right · bar lengths share one scale
All meetings (3)
| 2004 | Cincinnati Masters | Hard | R64 | Gaston Gaudio | 6-4 6-2 |
| 2002 | US Open | Hard | R32 | Jan-Michael Gambill | 6-0 6-2 6-0 |
| 2001 | Miami Masters | Hard | QF | Jan-Michael Gambill | 3-6 7-5 6-4 |
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.