Head to head
0
Clay
1
1
Carpet
0
Martin Sinner's wins on the left · Jan Siemerink's on the right · bar lengths share one scale
All meetings (2)
| 1996 | Copenhagen | Carpet | R16 | Martin Sinner | 6-4 6-7(3) 7-6(3) |
| 1995 | Hamburg Masters | Clay | R64 | Jan Siemerink | 6-4 2-6 6-2 |
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.