Head to head
1
Hard
1
0
Clay
2
1
Carpet
0
Jan Siemerink's wins on the left · Arnaud Clement's on the right · bar lengths share one scale
All meetings (5)
| 2001 | US Open | Hard | R64 | Arnaud Clement | 6-7(4) 6-4 7-6(1) 6-1 |
| 1999 | Vienna | Hard | R32 | Jan Siemerink | 5-7 7-6(5) 7-6(6) |
| 1999 | Munich | Clay | R32 | Arnaud Clement | 6-4 6-4 |
| 1998 | Rome Masters | Clay | R64 | Arnaud Clement | 6-1 6-4 |
| 1998 | Copenhagen | Carpet | R32 | Jan Siemerink | 6-1 6-3 |
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.