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| Bogota Tier III Clay | Feb 25 2007 |
| Qual 1 | Estefania Craciun - Castiblanco | 6-3 6-1 |
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| Toluca $10,000 Hard | Mar 11 2007 |
| Qual 1 | Castiblanco(3) | bye |
| Qual 2 | Castiblanco(3) - Bo Verhulsdonk | 6-4 1-6 6-3 |
| 1 | Danielle Brown - Castiblanco | 7-67 6-2 |
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| Merida $10,000 Hard | Mar 18 2007 |
| Qual 1 | Bo Verhulsdonk - Castiblanco(5) | 6-2 6-4 |
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| Coatzacoalcos $25,000 Hard | Mar 25 2007 |
| Qual 1 | Julianna Gates - Castiblanco(11) | 6-3 6-1 |
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| Xalapa $10,000 Hard | Apr 1 2007 |
| 1 | Nazari Urbina - Castiblanco | 6-1 6-3 |
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| Buenos Aires $10,000 Clay | May 6 2007 |
| 1 | Soledad Esperon(1) - Castiblanco | 6-1 6-2 |
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| Cordoba $10,000 Clay | May 13 2007 |
| 1 | Maria Sol Rotondo - Castiblanco | 6-3 6-4 |
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| Cordoba $10,000 Clay | May 20 2007 |
| 1 | Castiblanco - Nataly Yoo | 6-75 6-3 6-4 |
| 2 | Soledad Esperon(1) - Castiblanco | 4-6 6-1 6-0 |
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| Cordoba $10,000 Clay | May 27 2007 |
| 1 | Fernanda Hermenegildo(7) - Castiblanco | 7-63 4-1 |
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| Campobasso $25,000 Clay | Jun 17 2007 |
| Qual 1 | Castiblanco(12) - Michelle Russ | 6-4 6-3 |
| Qual 2 | Oksana Teplyakova(8) - Castiblanco(12) | 6-4 6-2 |
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| Fontanafredda $25,000 Clay | Jun 24 2007 |
| Qual 1 | Castiblanco | bye |
| Qual 2 | Story Tweedie-Yates(7) - Castiblanco | 6-3 6-0 |
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| Padova $25,000 Clay | Jul 1 2007 |
| Qual 1 | Castiblanco - Inna Sokolova | 6-3 6-0 |
| Qual 2 | Margalita Chakhnashvili(1) - Castiblanco | 6-1 6-3 |
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| Cremona $10,000 Clay | Jul 8 2007 |
| 1 | Castiblanco - Susanna Mussi | 6-0 7-5 |
| 2 | Alice Balducci(6) - Castiblanco | 6-4 6-0 |
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| Imola Tozzona $10,000 Carpet | Jul 15 2007 |
| 1 | Castiblanco - Federica d'Ambrosio | 6-2 7-63 |
| 2 | Giulia Gatto-Monticone(6) - Castiblanco | 6-3 6-0 |
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| Rome-Tevere Remo $25,000 Clay | Jul 22 2007 |
| Qual 1 | Stefania Chieppa(4) - Castiblanco | 6-0 6-4 |
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| Caracas $10,000 Hard | Aug 5 2007 |
| 1 | Castiblanco(3) - Rocio Galan | 4-6 6-3 6-3 |
| 2 | Lena Litvak - Castiblanco(3) | 6-3 2-6 6-1 |
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| Caracas $10,000 Hard | Aug 12 2007 |
| 1 | Castiblanco(5) - Angelica Chavez | 3-6 6-3 7-65 |
| 2 | Castiblanco(5) - Aleksandrina Naydenova | 7-613 4-6 6-4 |
| QF | Mariana Muci(4) - Castiblanco(5) | 6-1 6-3 |
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| Bogota $25,000 Clay | Aug 19 2007 |
| 1 | Leticia Sobral - Castiblanco | 6-2 6-2 |
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| Santa Cruz $10,000 Clay | Sep 2 2007 |
| 1 | Castiblanco - Daniela Amelunge | 6-3 6-1 |
| 2 | Andrea Koch-Benvenuto(4) - Castiblanco | 6-4 6-3 |
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| Barueri $10,000 Hard | Sep 9 2007 |
| 1 | Castiblanco - Larissa Carvalho(1) | 6-4 7-67 |
| 2 | Vivian Segnini - Castiblanco | 6-3 4-6 6-3 |
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| Santo Andre $10,000 Hard | Sep 16 2007 |
| 1 | Castiblanco - Larissa Carvalho(1) | 6-3 7-64 |
| 2 | Castiblanco - Flavia Borges | 6-3 6-2 |
| QF | Maria Fernanda Alvarez Teran - Castiblanco | 6-75 6-4 6-4 |
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| Itajai $10,000 Clay | Sep 23 2007 |
| 1 | Fabiana Chiaparini - Castiblanco(6) | 6-4 1-6 6-2 |
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| Valencia $10,000 Hard | Oct 21 2007 |
| 1 | Castiblanco(4) - Ester Masuri | 6-3 7-5 |
| 2 | Nicole Monteiro - Castiblanco(4) | 3-6 6-2 6-3 |
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| Valencia $10,000 Hard | Oct 28 2007 |
| 1 | Castiblanco(5) - Oriana Escalante | 6-2 6-0 |
| 2 | Castiblanco(5) - Shannon Robinson | 7-66 3-6 6-2 |
| QF | Castiblanco(5) - Natalia Ryzhonkova | 3-6 6-2 2-0 |
| SF | Romana Janshen(6) - Castiblanco(5) | 6-0 6-0 |
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| Asuncion $10,000 Clay | Nov 4 2007 |
| 1 | Castiblanco(4) - Maria-Paula Aguirre | 7-63 7-5 |
| 2 | Carla Beltrami - Castiblanco(4) | 6-1 |
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| Cordoba $10,000 Clay | Nov 11 2007 |
| 1 | Castiblanco(7) - Rocio Galarza | 6-0 6-2 |
| 2 | Nathalia Rossi - Castiblanco(7) | 6-4 6-3 |
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| Buenos Aires $10,000 Clay | Nov 18 2007 |
| 1 | Castiblanco - Yanet Nunez | 4-6 6-4 6-1 |
| 2 | Vanina Garcia Sokol(5) - Castiblanco | 6-2 6-1 |