Michael Chang defeated Mikael Pernfors 2-6 6-1 7-6 in the Los Angeles round of 32 on hard. The result followed the form book — Michael Chang came in leading the head-to-head 2–0, defending last year's final. Michael Chang extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-12 | New Haven | R64 | hard | Michael Chang | 6-3 5-7 6-2 |
| 1990-08-27 | US Open | R128 | hard | Michael Chang | 6-0 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.