Kevin Ullyett defeated Tony Bujan 7-5 3-6 7-5 in the USA 3 Masters 4 qualifying round on hard. The upset overturned the form book — Tony Bujan came in leading the head-to-head 1–0, but Kevin Ullyett had been the form player, winning 4 of their last 7 on hard. Kevin Ullyett claimed a first win over Tony Bujan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-06-03 | USA 3 Masters 2 | R64 | hard | Tony Bujan | 6-3 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.