Head to head
3
Hard
0
Michael Chang's wins on the left · Alex O'Brien's on the right · bar lengths share one scale
All meetings (3)
| 1997 | Canada Masters | Hard | R16 | Michael Chang | 4-6 6-2 6-3 |
| 1995 | Cincinnati Masters | Hard | R32 | Michael Chang | 4-6 6-4 6-1 |
| 1993 | Canada Masters | Hard | R32 | Michael Chang | 6-2 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.