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| Rotterdam $10,000 Clay | Jun 28 2009 |
| Qual 1 | Sviatlana Pirazhenka - Casares | 6-2 6-2 |
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| Mazatlan $10,000 Hard | Sep 13 2009 |
| Qual 1 | Casares - Reka Rohonyi | 6-0 6-1 |
| Qual 2 | Casares - Andressa Garcia(4) | 6-2 6-3 |
| 1 | Casares - Ingrid Vargas Calvo(8) | 4-6 6-3 6-2 |
| 2 | Casares - Alina Sullivan | 1-6 6-2 7-62 |
| QF | Casares - Christi Potgieter | 5-7 7-61 6-2 |
| SF | Fernanda Hermenegildo(7) - Casares | 3-6 7-616 6-3 |
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| Los Mochis $10,000 Clay | Sep 20 2009 |
| Qual 1 | Andrea Gamiz - Casares | 6-1 6-4 |
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| Ciudad Obregon $10,000 Hard | Sep 27 2009 |
| Qual 1 | Casares - Giannina Minieri | 6-4 7-62 |
| Qual 2 | Casares - Andressa Garcia(6) | 6-3 4-6 6-2 |
| 1 | Casares - Barbara Rush | 0-6 6-1 7-5 |
| 2 | Paula Ormaechea - Casares | 6-3 6-2 |
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| Juarez $10,000 Clay | Oct 4 2009 |
| 1 | Casares - Tristen Z. Dewar | 6-2 6-2 |
| 2 | Katerina Kramperova(6) - Casares | 6-0 6-3 |
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| Mexico City $25,000 Hard | Oct 11 2009 |
| Qual 1 | Casares(9) - Julianna Barbosa Bacelar | 6-3 6-1 |
| Qual 2 | Macall Harkins(7) - Casares(9) | 6-1 6-4 |
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| Mexico City $10,000 Hard | Oct 18 2009 |
| Qual 1 | Casares(2) | bye |
| Qual 2 | Casares(2) - Giovanna Manifacio | 6-2 4-6 6-4 |
| 1 | Katerina Kramperova(3) - Casares | 6-0 6-2 |
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| Bogota $10,000 Clay | Nov 8 2009 |
| 1 | Casares(7) - Roxana Alexandru | 6-0 6-2 |
| 2 | Paula Catalina Robles Garcia - Casares(7) | 6-4 7-5 |
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| La Serena $10,000 Clay | Dec 6 2009 |
| 1 | Casares(8) - Paula Espinoza Pena | 6-1 6-1 |
| 2 | Belen Luduena - Casares(8) | 1-6 6-3 6-4 |
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| Santiago $10,000 Clay | Dec 13 2009 |
| 1 | Karina Venditti - Casares | 4-6 6-1 6-4 |
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| Quito $10,000 Clay | Dec 20 2009 |
| 1 | Casares(5) - Beatriz Maria Martins Cecato | 6-4 6-3 |
| 2 | Casares(5) - Alejandra Alvarez | 6-4 6-4 |
| QF | Casares(5) - Dalila Jakupovic(2) | 4-6 6-3 6-4 |
| SF | Casares(5) - Mariana Correa | 6-1 6-4 |
| F | Andrea Gamiz - Casares(5) | 6-1 6-3 |