Head to head
1
Clay
2
1
Carpet
0
Stefan Koubek's wins on the left · Gaston Gaudio's on the right · bar lengths share one scale
All meetings (4)
| 2004 | Basel | Carpet | R16 | Stefan Koubek | 6-1 1-6 6-3 |
| 2003 | Gstaad | Clay | QF | Gaston Gaudio | 6-3 6-1 |
| 2002 | Kitzbuhel | Clay | R16 | Gaston Gaudio | 3-6 6-1 6-0 |
| 2000 | Mexico City | Clay | QF | Stefan Koubek | 7-6(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.