Head to head
2
Hard
1
0
Carpet
1
Jan Siemerink's wins on the left · Kenneth Carlsen's on the right · bar lengths share one scale
All meetings (4)
| 1996 | Hong Kong | Hard | R16 | Jan Siemerink | 6-3 6-4 |
| 1995 | Cincinnati Masters | Hard | R64 | Jan Siemerink | 6-3 7-6(3) |
| 1995 | Hong Kong | Hard | R16 | Kenneth Carlsen | 6-4 2-6 7-6(4) |
| 1993 | Rotterdam | Carpet | R16 | Kenneth Carlsen | 4-6 7-6(3) 6-4 |
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.