Head to head
1
Hard
1
Alex O'Brien's wins on the left · Paul Haarhuis's on the right · bar lengths share one scale
All meetings (2)
| 1994 | US Open | Hard | R128 | Alex O'Brien | 6-3 7-6(1) 6-3 |
| 1994 | Miami Masters | Hard | R64 | Paul Haarhuis | 6-0 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.