Head to head
5
Hard
3
2
Clay
1
Lleyton Hewitt's wins on the left · Tommy Haas's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (11)
| 2013 | Beijing | Hard | R32 | Lleyton Hewitt | 7-6(6) 6-3 |
| 2004 | US Open | Hard | QF | Lleyton Hewitt | 6-2 6-2 6-2 |
| 2004 | Hamburg Masters | Clay | R32 | Lleyton Hewitt | 6-4 7-5 |
| 2001 | Stuttgart Masters | Hard | SF | Tommy Haas | 2-6 6-3 6-4 |
| 2001 | US Open | Hard | R16 | Lleyton Hewitt | 3-6 7-6(2) 6-4 6-2 |
| 2001 | World Team Cup | Clay | RR | Tommy Haas | 7-6(5) 3-6 6-3 |
| 2001 | Rome Masters | Clay | R32 | Lleyton Hewitt | 7-5 6-3 |
| 2001 | Australian Open | Hard | R64 | Lleyton Hewitt | 7-5 7-6(5) 6-4 |
| 2001 | Adelaide | Hard | QF | Tommy Haas | 6-4 0-6 6-1 |
| 2000 | Miami Masters | Hard | R32 | Lleyton Hewitt | 6-1 6-3 |
| 1999 | Australian Open | Hard | R64 | Tommy Haas | 4-6 6-4 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.