Frederica Piedade defeated Diana Costa 6-1 6-2 in the Vilamoura 10K round of 32 on hard. The result followed the form book — Frederica Piedade came in leading the head-to-head 3–0. Frederica Piedade extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-06-14 | Montemor-o-Novo 10K | R32 | hard | Frederica Piedade | 6-0 6-2 |
| 2002-08-05 | Vigo 10K | R16 | hard | Frederica Piedade | 6-1 6-1 |
| 1998-09-01 | Vila Do Conde 10K | R32 | hard | Frederica Piedade | 6-3 2-6 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.