Mariana Duque Marino defeated Leticia Costas 6-2 6-3 in the Casablanca 25K round of 16 on clay. The result followed the form book — Mariana Duque Marino came in leading the head-to-head 1–0. Mariana Duque Marino extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-05 | Biella 100K | R16 | clay | Mariana Duque Marino | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.