Head to head
1
Hard
0
0
Clay
1
Stefan Koubek's wins on the left · Nikolay Davydenko's on the right · bar lengths share one scale
All meetings (2)
| 2009 | Roland Garros | Clay | R128 | Nikolay Davydenko | 6-2 6-1 6-4 |
| 2003 | Vienna | Hard | R32 | Stefan Koubek | 6-2 4-6 7-6(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.