Yohny Romero defeated Martin Stepanek 6-3 6-3 in the Mexico 3 Masters 4 semi-final on carpet. The upset overturned the form book — Martin Stepanek came in leading the head-to-head 1–0. Yohny Romero claimed a first win over Martin Stepanek in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-12 | Mexico 3 Masters 3 | QF | carpet | Martin Stepanek | 7-6 1-6 7-6 |