Head to head
2
Hard
0
3
Clay
1
1
Carpet
1
Karol Kucera's wins on the left · Nicolas Kiefer's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2001 | Mallorca | Clay | R32 | Nicolas Kiefer | 6-4 6-2 |
| 2001 | Barcelona | Clay | R64 | Karol Kucera | 6-2 6-4 |
| 1999 | Basel | Carpet | SF | Karol Kucera | 6-4 6-3 |
| 1999 | Indian Wells Masters | Hard | R16 | Karol Kucera | 6-4 3-6 6-4 |
| 1998 | World Team Cup | Clay | RR | Karol Kucera | 6-4 6-2 |
| 1998 | Sydney Outdoor | Hard | R16 | Karol Kucera | 5-0 RET |
| 1997 | Stuttgart Outdoor | Clay | R64 | Karol Kucera | 1-2 RET |
| 1997 | Milan | Carpet | QF | Nicolas Kiefer | 2-6 6-3 6-4 |
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.