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| Hull $10,000 Hard | Jan 30 2005 |
| 1 | Eva Hoch - Kustova | 0-6 6-2 7-5 |
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| Sunderland $25,000 Hard | Feb 6 2005 |
| Qual 1 | Maria Geznenge(4) - Kustova | 6-2 6-3 |
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| Redbridge $25,000 Hard | Feb 13 2005 |
| Qual 1 | Kustova - Renata Kucerkova(12) | 7-5 6-3 |
| Qual 2 | Kustova - Sarah Coles-WC | 6-71 6-1 6-2 |
| 1 | Elena Baltacha(1) - Kustova-Q | 6-0 6-3 |
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| Redding $25,000 Hard | Mar 27 2005 |
| Qual 1 | Kustova - Matea Mezak | 6-4 5-7 6-3 |
| Qual 2 | Vasilisa Bardina(16) - Kustova | 6-2 6-3 |
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| Augusta $25,000 Hard | Apr 3 2005 |
| Qual 1 | Kustova - Ekaterina Afinogenova(16) | 1-6 7-5 6-1 |
| Qual 2 | Kristen Schlukebir(5) - Kustova | 6-2 6-4 |
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| Minsk $10,000 Carpet | Apr 10 2005 |
| 1 | Arina Rodionova-Q - Kustova(4) | 7-62 6-2 |
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| Antalya $25,000 Clay | May 15 2005 |
| Qual 1 | Kustova(7) | bye |
| Qual 2 | Kustova(7) - Chantal Coombs | 7-5 6-4 |
| Qual 3 | Tatia Mikadze(15) - Kustova(7) | 6-2 6-1 |
| 1 | Kristina Barrois - Kustova-LL | 7-5 7-5 |
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| Istanbul Tier III Clay | May 22 2005 |
| Qual 1 | Irina Buryachok - Kustova | 6-3 6-3 |
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| Galatina $25,000 Clay | Jun 5 2005 |
| Qual 1 | Kustova(14) | bye |
| Qual 2 | Karina Jacobsgaard - Kustova(14) | 5-7 6-0 7-5 |
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| Grado $25,000 Clay | Jun 12 2005 |
| Qual 1 | Kustova - Elisa Belleri | 6-2 7-5 |
| Qual 2 | Oxana Karyshkova - Kustova | 7-5 1-6 6-3 |
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| Gorizia $25,000 Clay | Jun 19 2005 |
| Qual 1 | Kustova - Krizia Borgarello | 6-4 6-1 |
| Qual 2 | Sanja Ancic(15) - Kustova | 6-0 6-1 |
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| Fontanafredda $25,000 Clay | Jun 26 2005 |
| Qual 1 | Kustova - Anet Kaasik | 6-3 6-3 |
| Qual 2 | Neha Uberoi(4) - Kustova | 6-0 6-1 |
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| Fano $75,000 Clay | Jul 3 2005 |
| Qual 1 | Renata Voracova - Kustova | 6-2 6-1 |
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| Rimini $50,000 Clay | Aug 14 2005 |
| Qual 1 | Kustova - Maria Geznenge | 6-2 6-2 |
| Qual 2 | Kustova - Flavia Mignola | 6-1 7-64 |
| Qual 3 | Valentina Sassi - Kustova | 6-3 6-1 |
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| Moscow $25,000 Clay | Aug 28 2005 |
| Qual 1 | Kustova(2) - Vera Leontieva | 6-2 6-2 |
| Qual 2 | Kustova(2) - Kristina Grigorian | 6-4 6-4 |
| 1 | Margalita Chakhnashvili(6) - Kustova-Q | 2-6 7-5 6-3 |
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| Balashikha $25,000 Clay | Sep 4 2005 |
| 1 | Kustova - Kristina Antoniychuk-Q | 6-3 2-6 6-3 |
| 2 | Kustova - Margalita Chakhnashvili(5) | 7-5 7-5 |
| QF | Nadejda Ostrovskaya(4) - Kustova | 6-2 6-4 |
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| Denain $75,000 Clay | Sep 11 2005 |
| Qual 1 | Karolina Kosinska(7) - Kustova | 6-2 6-1 |
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| Bordeaux $75,000 Clay | Sep 18 2005 |
| Qual 1 | Kustova | bye |
| Qual 2 | Kustova - Svenja Weidemann | 6-1 7-5 |
| Qual 3 | Jarmila Gajdosova(5) - Kustova | 7-65 6-73 6-3 |
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| Luxembourg Tier II Hard | Oct 2 2005 |
| Qual 1 | Adriana Barna - Kustova | 6-1 6-2 |
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| Tashkent Tier IV Hard | Oct 9 2005 |
| Qual 1 | Iroda Tulyaganova(8) - Kustova | 7-61 6-4 |
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| Joue les Tours $50,000 Hard | Oct 16 2005 |
| Qual 1 | Margalita Chakhnashvili(3) - Kustova | 7-5 6-2 |
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| Minsk $25,000 Carpet | Nov 6 2005 |
| 1 | Kustova - Alexandra Panova-Q | 6-4 6-3 |
| 2 | Agnieszka Radwanska-Q - Kustova | 6-4 6-4 |
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| Poitiers $75,000 Hard | Nov 27 2005 |
| Qual 1 | Andrea Popovic - Kustova | 7-5 3-6 6-3 |