Vincent Allegre defeated Rafael Serpa Guinazu 6-4 6-2 in the Mexico 1 2 round of 16 on clay. The upset overturned the form book — Rafael Serpa Guinazu came in leading the head-to-head 1–0. Vincent Allegre claimed a first win over Rafael Serpa Guinazu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-12 | Mexico 1 1 | SF | clay | Rafael Serpa Guinazu | 6-3 3-2 |