Head to head
1
Hard
4
Paradorn Srichaphan's wins on the left · Nicolas Kiefer's on the right · bar lengths share one scale
All meetings (5)
| 2006 | Australian Open | Hard | R128 | Nicolas Kiefer | 6-7(5) 4-6 7-6(5) 6-1 6-2 |
| 2004 | Indianapolis | Hard | QF | Nicolas Kiefer | 7-6(7) 7-6(5) |
| 2003 | Long Island | Hard | SF | Paradorn Srichaphan | 6-0 6-2 |
| 1999 | Tokyo | Hard | R32 | Nicolas Kiefer | 6-2 6-3 |
| 1999 | Hong Kong | Hard | R16 | 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.