Head to head
3
Hard
1
Karsten Braasch's wins on the left · Alex O'Brien's on the right · bar lengths share one scale
All meetings (4)
| 1997 | Australian Open | Hard | R128 | Karsten Braasch | 3-6 6-3 6-4 7-5 |
| 1994 | Canada Masters | Hard | R32 | Karsten Braasch | 1-6 7-6(4) 7-6(5) |
| 1994 | Memphis | Hard | QF | Alex O'Brien | 6-3 6-3 |
| 1994 | San Jose | Hard | R16 | Karsten Braasch | 6-4 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.