Head to head
1
Hard
0
1
Clay
0
1
Grass
0
0
Carpet
1
Jan Siemerink's wins on the left · Paul Haarhuis's on the right · bar lengths share one scale
All meetings (4)
| 1999 | Halle | Grass | R32 | Jan Siemerink | 4-6 6-3 6-4 |
| 1996 | Paris Masters | Carpet | R64 | Paul Haarhuis | 3-6 7-6(6) 6-4 |
| 1995 | Long Island | Hard | R16 | Jan Siemerink | 7-6(5) 6-4 |
| 1995 | Amsterdam | Clay | R32 | Jan Siemerink | 6-3 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.