Geoff Grant defeated Lennart Jonason 7-5 7-6 in the USA 1 Masters 3 round of 64 on clay. The upset overturned the form book — Lennart Jonason came in leading the head-to-head 1–0. Geoff Grant claimed a first win over Lennart Jonason in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-03-19 | USA 1 Masters 4 | R16 | clay | Lennart Jonason | 7-6 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.