Head to head
1
Clay
0
1
Carpet
0
Nicolas Kiefer's wins on the left · Marzio Martelli's on the right · bar lengths share one scale
All meetings (2)
| 1997 | Hamburg Masters | Clay | R64 | Nicolas Kiefer | 4-6 7-6(4) 6-2 |
| 1997 | Milan | Carpet | R16 | Nicolas Kiefer | 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.