Roger Anderson defeated Jhonnatan Medina Alvarez 6-1 6-1 in the Mexico F8 round of 32 on hard. The upset overturned the form book — Jhonnatan Medina Alvarez came in leading the head-to-head 1–0, but Roger Anderson had been the form player, winning 2 of their last 4 on hard. Roger Anderson claimed a first win over Jhonnatan Medina Alvarez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-07-14 | Ecuador F2 | R16 | clay | Jhonnatan Medina Alvarez | 4-6 6-3 7-6(2) |