Head to head
1
Hard
0
0
Clay
1
Nicolas Kiefer's wins on the left · Andrea Gaudenzi's on the right · bar lengths share one scale
All meetings (2)
| 2000 | US Open | Hard | R128 | Nicolas Kiefer | 7-5 6-4 0-6 6-4 |
| 2000 | St. Poelten | Clay | R32 | Andrea Gaudenzi | 6-7(4) 3-0 RET |
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.