Brian Dunn defeated Kenny Thorne 7-6 6-7 6-4 in the Memphis round of 64 on hard. The upset overturned the form book — Kenny Thorne came in leading the head-to-head 1–0. Brian Dunn claimed a first win over Kenny Thorne in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-10-21 | USA 5 Masters 2 | R32 | hard | Kenny Thorne | 6-4 6-1 |