Mariana Diaz Oliva defeated Maria Fernanda Landa 4-6 7-5 7-5 in the Oporto 75K round of 32 on clay. The result followed the form book — Mariana Diaz Oliva came in leading the head-to-head 3–0. Mariana Diaz Oliva extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-09-22 | Tucuman 25K | SF | clay | Mariana Diaz Oliva | 6-4 6-0 |
| 1997-06-09 | Budapest 50K | R16 | clay | Mariana Diaz Oliva | 6-7 6-4 6-1 |
| 1996-07-22 | Buenos Aires 25K | F | clay | Mariana Diaz Oliva | 6-3 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.