Head to head
0
Hard
1
1
Clay
0
Jaime Oncins's wins on the left · Michael Chang's on the right · bar lengths share one scale
All meetings (2)
| 1996 | US Open | Hard | R128 | Michael Chang | 3-6 6-1 6-0 7-6(6) |
| 1992 | Barcelona Olympics | Clay | R32 | Jaime Oncins | 6-2 3-6 6-3 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.