Head to head
Rivalry summary
Tommy Haas and Alex O'Brien met 1 times on the ATP tour between 1999 and 1999. Tommy Haas leads the head-to-head 1–0 against Alex O'Brien.
1
Hard
0
Tommy Haas's wins on the left · Alex O'Brien's on the right · bar lengths share one scale
All meetings (1)
| 1999 | Memphis | Hard | R32 | Tommy Haas | 6-4 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.