Head to head
4
Hard
0
1
Carpet
0
Michael Chang's wins on the left · Mikael Pernfors's on the right · bar lengths share one scale
All meetings (5)
| 1991 | New Haven | Hard | R64 | Michael Chang | 6-3 5-7 6-2 |
| 1991 | Los Angeles | Hard | R32 | Michael Chang | 2-6 6-1 7-6(0) |
| 1990 | US Open | Hard | R128 | Michael Chang | 6-0 6-2 6-3 |
| 1989 | Memphis | Hard | R16 | Michael Chang | 7-5 6-1 |
| 1988 | San Francisco | Carpet | QF | Michael Chang | 6-4 6-0 |
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.