Head to head
1
Hard
1
0
Clay
1
0
Grass
1
0
Carpet
1
Stefan Koubek's wins on the left · Roger Federer's on the right · bar lengths share one scale
All meetings (5)
| 2003 | Wimbledon | Grass | R64 | Roger Federer | 7-5 6-1 6-1 |
| 2003 | Munich | Clay | SF | Roger Federer | 6-2 6-1 |
| 2002 | Indian Wells Masters | Hard | R32 | Roger Federer | 6-4 6-4 |
| 2002 | Milan | Carpet | R32 | Roger Federer | 7-6(2) 6-3 |
| 2001 | Vienna | Hard | QF | Stefan Koubek | 7-6(3) 7-5 |
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.