Head to head
2
Hard
0
0
Grass
1
Alex O'Brien's wins on the left · Thomas Enqvist's on the right · bar lengths share one scale
All meetings (3)
| 1998 | Queen's Club | Grass | R32 | Thomas Enqvist | 6-4 3-6 6-2 |
| 1996 | Los Angeles | Hard | R16 | Alex O'Brien | 6-4 4-6 7-5 |
| 1994 | Cincinnati Masters | Hard | R16 | Alex O'Brien | 6-4 6-3 |
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.