Michael Sell defeated Oscar Ortiz 6-4 7-6 in the Mexico 4 Masters 3 final on hard. The upset overturned the form book — Oscar Ortiz came in leading the head-to-head 1–0. Michael Sell claimed a first win over Oscar Ortiz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-08-09 | Chinese Taipei Masters 1 | F | hard | Oscar Ortiz | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.