Head to head
2
Hard
1
1
Clay
0
Tommy Haas's wins on the left · Jarkko Nieminen's on the right · bar lengths share one scale
All meetings (6)
| 2013 | Dusseldorf | Clay | QF | Jarkko Nieminen | W/O |
| 2013 | Australian Open | Hard | R128 | Jarkko Nieminen | 7-6(3) 4-6 6-3 4-6 8-6 |
| 2012 | Indian Wells Masters | Hard | R128 | Tommy Haas | 7-6(9) 6-4 |
| 2009 | Stockholm | Hard | R16 | Jarkko Nieminen | W/O |
| 2002 | Long Island | Hard | QF | Tommy Haas | 3-6 6-4 6-2 |
| 2002 | Roland Garros | Clay | R32 | Tommy Haas | 6-3 7-5 2-6 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.