Mercedes Paz defeated Paula Racedo 6-2 6-2 in the Tucuman 25K round of 32 on clay. The upset overturned the form book — Paula Racedo came in leading the head-to-head 1–0. Mercedes Paz claimed a first win over Paula Racedo in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-09-29 | Buenos Aires 10K | R16 | clay | Paula Racedo | 6-3 4-6 6-3 |