Head to head
2
Hard
0
0
Clay
2
Sjeng Schalken's wins on the left · Nikolay Davydenko's on the right · bar lengths share one scale
All meetings (4)
| 2005 | St. Poelten | Clay | R16 | Nikolay Davydenko | 6-3 6-1 |
| 2005 | Marseille | Hard | R32 | Sjeng Schalken | 3-6 6-4 6-1 |
| 2003 | Estoril | Clay | R32 | Nikolay Davydenko | 6-3 6-2 |
| 2001 | Washington | Hard | R32 | Sjeng Schalken | 6-3 6-1 |
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.