Mariana Duque Marino defeated Andrea Koch Benvenuto 6-1 6-1 in the Bogota 25K qualifying round on clay. The upset overturned the form book — Andrea Koch Benvenuto came in leading the head-to-head 2–1, but Mariana Duque Marino had been the form player, winning 3 of their last 6 on clay. Mariana Duque Marino narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-08 | Los Mochis 10K | QF | clay | Mariana Duque Marino | 6-3 7-5 |
| 2005-08-22 | Bogota 10K | SF | clay | Andrea Koch Benvenuto | 7-5 3-6 6-3 |
| 2004-09-13 | Bogota 10K | R16 | clay | Andrea Koch Benvenuto | 7-6(5) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.