Mike Bauer defeated Albert Chang 6-4 6-0 in the Canada Masters 3 qualifying round on clay. The upset overturned the form book — Albert Chang came in leading the head-to-head 1–0. Mike Bauer claimed a first win over Albert Chang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-06-08 | Canada Masters 1 | SF | clay | Albert Chang | 7-6 4-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.