Head to head
2
Hard
0
1
Clay
0
2
Carpet
0
Thomas Muster's wins on the left · Jan Siemerink's on the right · bar lengths share one scale
All meetings (5)
| 1998 | Vienna | Carpet | R32 | Thomas Muster | 6-2 6-4 |
| 1997 | Cincinnati Masters | Hard | QF | Thomas Muster | 6-7(1) 7-6(3) 7-6(5) |
| 1995 | Rome Masters | Clay | R32 | Thomas Muster | 3-6 6-4 6-3 |
| 1994 | Sydney Outdoor | Hard | R32 | Thomas Muster | 7-6(5) 6-3 |
| 1993 | Vienna | Carpet | QF | Thomas Muster | 5-2 RET |
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.