Jimmy Brown defeated John Sullivan 7-6 6-1 in the USA 3 Masters 3 round of 32 on hard. The upset overturned the form book — John Sullivan came in leading the head-to-head 1–0, but Jimmy Brown had been the form player, winning 6 of their last 10 on hard. Jimmy Brown claimed a first win over John Sullivan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-07-15 | Washington | R64 | hard | John Sullivan | 6-3 6-2 |