Head to head
1
Hard
1
2
Clay
0
0
Grass
1
Nicolas Kiefer's wins on the left · Tommy Haas's on the right · bar lengths share one scale
All meetings (5)
| 2005 | Rome Masters | Clay | R64 | Nicolas Kiefer | 6-3 6-1 |
| 2004 | Los Angeles | Hard | F | Tommy Haas | 7-6(6) 6-4 |
| 2000 | Wimbledon | Grass | R128 | Tommy Haas | 5-7 6-4 6-2 6-3 |
| 1999 | Canada Masters | Hard | R16 | Nicolas Kiefer | 6-3 7-6(4) |
| 1998 | Roland Garros | Clay | R128 | Nicolas Kiefer | 6-1 6-2 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.