Michael Robertson defeated Mike Bauer 7-6 4-6 6-2 in the USA 5 Masters 2 round of 16 on hard. The upset overturned the form book — Mike Bauer came in leading the head-to-head 1–0. Michael Robertson claimed a first win over Mike Bauer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-10-21 | USA 5 Masters 4 | SF | hard | Mike Bauer | 6-4 7-6 |