Head to head
5
Hard
0
2
Clay
0
0
Grass
1
1
Carpet
0
Nicolas Kiefer's wins on the left · Jurgen Melzer's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 2009 | Halle | Grass | R16 | Jurgen Melzer | 6-1 RET |
| 2009 | Davis Cup WG R1: GER vs AUT | Hard | RR | Nicolas Kiefer | 7-6(3) 6-4 6-4 |
| 2006 | Roland Garros | Clay | R128 | Nicolas Kiefer | 7-6(4) 6-3 6-1 |
| 2006 | Hamburg Masters | Clay | R64 | Nicolas Kiefer | 6-2 3-6 6-3 |
| 2005 | St. Petersburg | Carpet | R16 | Nicolas Kiefer | 3-6 6-3 7-5 |
| 2004 | Canada Masters | Hard | QF | Nicolas Kiefer | 3-6 6-1 6-1 |
| 2004 | Memphis | Hard | R16 | Nicolas Kiefer | 7-6(5) 6-7(2) 6-3 |
| 2003 | Vienna | Hard | R16 | Nicolas Kiefer | 6-3 6-4 |
| 1999 | Vienna | Hard | R16 | Nicolas Kiefer | 6-4 6-0 |
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.