Miguel Tobon defeated Laurence Tieleman 6-4 6-4 in the Central America Masters 1 qualifying round on carpet. The upset overturned the form book — Laurence Tieleman came in leading the head-to-head 1–0. Miguel Tobon claimed a first win over Laurence Tieleman in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-04-28 | Caribbean 2 Masters 4 | R32 | hard | Laurence Tieleman | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.