Jhonnatan Medina Alvarez defeated Johny De Leon 6-0 6-4 in the Ecuador F3 round of 32 on clay. The upset overturned the form book — Johny De Leon came in leading the head-to-head 1–0. Jhonnatan Medina Alvarez claimed a first win over Johny De Leon in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-05-26 | Colombia F1B | R32 | clay | Johny De Leon | 7-6(4) 6-0 |