Head to head
1
Hard
0
1
Clay
0
0
Grass
1
Tommy Haas's wins on the left · John van Lottum's on the right · bar lengths share one scale
All meetings (3)
| 2001 | US Open | Hard | R128 | Tommy Haas | 6-2 6-2 7-6(5) |
| 2000 | Davis Cup WG R1: GER vs NED | Clay | RR | Tommy Haas | 4-6 7-6(4) 6-3 6-2 |
| 1998 | Wimbledon | Grass | R32 | John van Lottum | 6-3 6-3 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.