Lilian Silva defeated Mariana Lopez Palacios 6-2 6-1 in the Guayaquil 10K round of 32 on clay. The upset overturned the form book — Mariana Lopez Palacios came in leading the head-to-head 1–0. Lilian Silva claimed a first win over Mariana Lopez Palacios in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-09-03 | Lima 10K | R16 | clay | Mariana Lopez Palacios | 6-2 6-4 |