Head to head
1
Hard
2
Mikael Tillstrom's wins on the left · Alex O'Brien's on the right · bar lengths share one scale
All meetings (3)
| 1998 | Tokyo | Hard | R32 | Mikael Tillstrom | 5-7 6-4 6-4 |
| 1997 | Sydney Outdoor | Hard | R16 | Alex O'Brien | 6-4 6-7(4) 6-4 |
| 1996 | Canada Masters | Hard | R16 | Alex O'Brien | 6-3 2-6 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.