Head to head
0
Hard
1
1
Clay
0
Michael Kohlmann's wins on the left · John van Lottum's on the right · bar lengths share one scale
All meetings (2)
| 1999 | Munich | Clay | R32 | Michael Kohlmann | 7-5 6-4 |
| 1998 | Singapore | Hard | R16 | John van Lottum | 6-4 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.