Head to head
1
Hard
2
1
Clay
1
Carlos Moya's wins on the left · Nicolas Kiefer's on the right · bar lengths share one scale
All meetings (5)
| 2004 | Canada Masters | Hard | R16 | Nicolas Kiefer | 6-4 2-6 6-4 |
| 2003 | Vienna | Hard | QF | Carlos Moya | 6-4 7-6(5) |
| 2001 | Mallorca | Clay | QF | Carlos Moya | 6-4 6-2 |
| 1999 | Australian Open | Hard | R128 | Nicolas Kiefer | 6-7(7) 6-4 7-6(6) 6-3 |
| 1998 | World Team Cup | Clay | RR | Nicolas Kiefer | 6-1 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.