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| Redbridge $25,000 Hard | Feb 22 2004 |
| Qual 1 | Kustova - Laura Dell'Angelo(14) | 6-4 6-0 |
| Qual 2 | Sabine Klaschka(8) - Kustova | 3-6 6-3 6-2 |
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| Galatina $25,000 Clay | Jun 6 2004 |
| Qual 1 | Kustova - Sonia Iacovacci | 6-0 6-1 |
| Qual 2 | Natalia Garbellotto(9) - Kustova | 6-3 6-3 |
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| Bastad $25,000 Clay | Jun 27 2004 |
| Qual 1 | Kustova(13) - Jenny Broughall | 6-0 6-1 |
| Qual 2 | Sabrina Jolk(5) - Kustova(13) | 6-2 6-2 |
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| Stuttgart-Vaihingen $25,000 Clay | Jul 4 2004 |
| Qual 1 | Kustova - Yevgenia Savranska(13) | 6-3 5-7 6-4 |
| Qual 2 | Kustova - Andrea Sieveke-WC | 6-2 6-72 7-5 |
| 1 | Dessislava Topalova - Kustova-Q | 7-63 7-5 |
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| Fed Cup | Jul 10 2004 |
| | Henrieta Nagyova-svk - Kustova | 6-1 7-5 |
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| Zwevegem $10,000 Clay | Jul 25 2004 |
| 1 | Kustova - Dubravka Cupac | 6-4 5-7 6-3 |
| 2 | Kustova - Neuza Silva(3) | 6-2 6-1 |
| QF | Anet Kaasik-Q - Kustova | 6-4 2-6 7-69 |
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| Petange $25,000 Clay | Aug 1 2004 |
| Qual 1 | Kustova - Sarah McLaren | 6-1 6-0 |
| Qual 2 | Ekaterina Dzehalevich(5) - Kustova | 6-1 4-2 |
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| Moscow $25,000 Clay | Aug 29 2004 |
| Qual 1 | Kustova(11) - Ekaterina Dranets-WC | 6-1 6-1 |
| Qual 2 | Kustova(11) - Sofia Avakova | 1-6 7-5 6-2 |
| 1 | Kustova-Q - Anastasiya Yakimova(2) | 6-4 2-6 6-1 |
| 2 | Nicole Remis - Kustova-Q | 6-4 7-5 |
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| Balashikha $25,000 Clay | Sep 5 2004 |
| Qual 1 | Kustova(13) - Anastasia Dvornikova | 5-7 6-1 6-0 |
| Qual 2 | Ekaterina Dzehalevich(1)-WC - Kustova(13) | 6-3 6-4 |
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| Tbilisi $25,000 Clay | Sep 19 2004 |
| 1 | Tinatin Kavlashvili - Kustova | 6-73 7-5 7-63 |
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| Batumi $50,000 Hard | Sep 26 2004 |
| Qual 1 | Kustova(1) - Maria Kalashnikova | 6-1 6-0 |
| Qual 2 | Kustova(1) - Irina Kuzmina | 3-6 7-63 6-0 |
| Qual 3 | Julia Ustyuzhanina - Kustova(1) | 6-4 6-3 |
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| Tashkent Tier IV Hard | Oct 17 2004 |
| Qual 1 | Antonia Matic(7) - Kustova | 6-4 2-6 6-2 |
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| Minsk $25,000 Carpet | Oct 31 2004 |
| 1 | Kustova - Olga Brozda | 6-3 6-3 |
| 2 | Ekaterina Dzehalevich(8) - Kustova | 6-2 1-6 6-3 |
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| Deauville $50,000 Clay | Nov 21 2004 |
| Qual 1 | Tatsiana Uvarova(8) - Kustova | 6-1 6-1 |
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| Opole $25,000 Carpet | Nov 28 2004 |
| Qual 1 | Irina Kuzmina(15) - Kustova | 6-2 6-3 |