Head to head
1
Hard
3
0
Grass
1
Daniel Vacek's wins on the left · Nicolas Kiefer's on the right · bar lengths share one scale
All meetings (5)
| 2001 | Tashkent | Hard | R32 | Daniel Vacek | 7-5 6-4 |
| 2000 | Rotterdam | Hard | R32 | Nicolas Kiefer | 6-2 6-4 |
| 1999 | Tashkent | Hard | SF | Nicolas Kiefer | 7-6(4) 6-2 |
| 1999 | Canada Masters | Hard | R64 | Nicolas Kiefer | 6-2 7-5 |
| 1999 | Halle | Grass | SF | Nicolas Kiefer | 6-4 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.