Maria Irigoyen defeated Ana Clara Duarte 6-4 6-4 in the Santiago 25K qualifying round on clay. The result followed the form book — Maria Irigoyen came in leading the head-to-head 6–0. Maria Irigoyen extended the head-to-head to 7–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-07-08 | Campinas 25K | R32 | clay | Maria Irigoyen | 7-6(3) 6-0 |
| 2012-10-22 | Brasilia 25K | R32 | clay | Maria Irigoyen | 2-6 6-3 6-0 |
| 2012-07-23 | Sao Jose Do Rio Preto 25K | QF | clay | Maria Irigoyen | 6-4 6-2 |
| 2008-07-28 | Campos Do Jordao 25K | R32 | hard | Maria Irigoyen | 6-3 4-6 6-2 |
| 2007-09-10 | Santo Andre 10K | QF | hard | Maria Irigoyen | 6-3 6-3 |
| 2007-08-06 | Caracas 10K | F | hard | Maria Irigoyen | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.