Head to head
2
Hard
2
Alex O'Brien's wins on the left · Chuck Adams's on the right · bar lengths share one scale
All meetings (4)
| 1996 | New Haven | Hard | R16 | Alex O'Brien | 6-3 2-6 6-2 |
| 1993 | Los Angeles | Hard | R16 | Chuck Adams | 7-5 6-2 |
| 1993 | San Francisco | Hard | R16 | Chuck Adams | 7-6(4) 6-2 |
| 1992 | Washington | Hard | R64 | Alex O'Brien | 4-6 7-6(2) 7-6(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.