Head to head
0
Hard
2
1
Grass
0
Mark Philippoussis's wins on the left · Alex O'Brien's on the right · bar lengths share one scale
All meetings (3)
| 1998 | Wimbledon | Grass | R64 | Mark Philippoussis | 6-7(3) 6-4 7-6(2) 6-3 |
| 1996 | New Haven | Hard | SF | Alex O'Brien | 7-6(4) 6-7(4) 6-4 |
| 1996 | Cincinnati Masters | Hard | R64 | Alex O'Brien | 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.