Mark Petchey defeated Brian Joelson 4-6 6-3 7-6 in the Great Britain 1 Masters 3 qualifying round on carpet. The upset overturned the form book — Brian Joelson came in leading the head-to-head 2–0. Mark Petchey claimed a first win over Brian Joelson in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-02-18 | Great Britain 1 Masters 1 | R16 | carpet | Brian Joelson | 7-5 6-1 |
| 1991-02-18 | Great Britain 1 Masters 4 | SF | carpet | Brian Joelson | 3-6 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.