Head to head
1
Clay
0
1
Carpet
0
Jan Siemerink's wins on the left · Bohdan Ulihrach's on the right · bar lengths share one scale
All meetings (2)
| 1998 | London | Carpet | R16 | Jan Siemerink | 6-3 6-7(4) 6-4 |
| 1995 | Amsterdam | Clay | QF | Jan Siemerink | 6-3 3-6 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.