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| Cairo $10,000 Clay | Mar 28 2004 |
| Qual 2 | Avdiyenko - Elizabeth Thomas | 6-1 7-64 |
| Qual 3 | Avdiyenko - Oxana Lyubtsova | 4-6 6-4 6-0 |
| Qual 4 | Avdiyenko - Mariana Muci | 6-3 6-1 |
| 1 | Barbara Pocza(7) - Avdiyenko-Q | 6-2 6-2 |
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| Cairo $10,000 Clay | Apr 4 2004 |
| Qual 1 | Avdiyenko - Miray Eshak | 6-3 6-0 |
| Qual 2 | Avdiyenko - Amanda Dundas | 6-0 6-2 |
| Qual 3 | Avdiyenko - Veronica Spiegel | 6-3 7-63 |
| Qual 4 | Avdiyenko - Stefanie de Laet | 6-3 6-2 |
| 1 | Petra Cetkovska(3) - Avdiyenko-Q | 6-4 6-4 |
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| Cairo $10,000 Clay | Apr 11 2004 |
| Qual 1 | Avdiyenko - Beatris Simion | 6-1 6-1 |
| Qual 2 | Avdiyenko - Claire Jalade(13) | 2-6 7-5 7-65 |
| Qual 3 | Avdiyenko - Varvara Galanina | 6-1 6-1 |
| 1 | Veronica Spiegel - Avdiyenko-Q | 7-66 7-5 |
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| Antalya $10,000 Clay | May 16 2004 |
| 1 | Avdiyenko - Varvara Galanina-Q | 6-2 6-1 |
| 2 | Avdiyenko - Nadine Hassinger(6) | 6-3 6-1 |
| QF | Avdiyenko - Oxana Karyshkova(4) | 6-4 6-2 |
| SF | Avdiyenko - Tinatin Kavlashvili-Q | 5-7 6-3 6-2 |
| F | Andrea Petkovic-Q - Avdiyenko | 6-3 6-4 |
| | |
| Antalya $10,000 Clay | May 23 2004 |
| 1 | Avdiyenko - Valentina Ponomartseva-WC | 6-1 6-0 |
| 2 | Avdiyenko - Melanie South(4) | 7-69 7-66 |
| QF | Avdiyenko - Oxana Karyshkova(5) | 6-4 1-6 6-2 |
| SF | Avdiyenko - Tinatin Kavlashvili | 6-1 6-2 |
| F | Ekaterina Makarova - Avdiyenko | 6-3 6-3 |
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| Kedzierzyn-Kozle $10,000 Clay | Jun 20 2004 |
| 1 | Avdiyenko - Aneta Turaj-LL | 6-4 6-2 |
| 2 | Avdiyenko - Oxana Karyshkova(2) | 4-6 6-2 6-4 |
| QF | Sandra Zahlavova(6) - Avdiyenko | 7-5 5-7 6-4 |
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| Lviv $10,000 Clay | Jul 18 2004 |
| 1 | Avdiyenko(5) - Valeria Bondarenko | 4-6 7-65 6-4 |
| 2 | Avdiyenko(5) - Daria Kozmina-Q | 6-2 7-66 |
| QF | Avdiyenko(5) - Zita Horanyi | 6-3 6-0 |
| SF | Zuzana Zemenova(1) - Avdiyenko(5) | 6-3 7-5 |
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| Gdynia $10,000 Clay | Aug 8 2004 |
| 1 | Avdiyenko(5) - Nikoleta Kipritidou | 6-2 6-1 |
| 2 | Avdiyenko(5) - Agata Komorowska-WC | 6-0 4-6 6-1 |
| QF | Avdiyenko(5) - Anna Bielen-Zarska(1) | 6-4 6-1 |
| SF | Petra Cetkovska(4) - Avdiyenko(5) | 6-2 6-3 |
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| Moscow $25,000 Clay | Aug 29 2004 |
| Qual 1 | Vasilisa Davydova - Avdiyenko(9) | 6-1 3-6 6-3 |
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| Istanbul $25,000 Hard | Oct 31 2004 |
| Qual 1 | Avdiyenko(7) - Dilek Goncu | 6-1 6-0 |
| Qual 2 | Avdiyenko(7) - Zita Horanyi | 7-5 6-4 |
| 1 | Nadejda Ostrovskaya - Avdiyenko-Q | 6-4 4-6 7-5 |
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| Cairo $10,000 Clay | Nov 28 2004 |
| 1 | Avdiyenko(8) - Miray Eshak | 6-0 6-0 |
| 2 | Avdiyenko(8) - Émilie Bacquet | 6-3 6-1 |
| QF | Nadejda Vassileva - Avdiyenko(8) | 6-4 0-6 7-5 |
| | |
| Cairo $10,000 Clay | Dec 5 2004 |
| 1 | Avdiyenko - Astrid Waernes(8) | 6-2 6-4 |
| 2 | Avdiyenko - Linda Smolenakova | 6-1 7-5 |
| QF | Avdiyenko - Sladjana Stankovic-Q | 6-3 6-2 |
| SF | Julia Ustyuzhanina - Avdiyenko | 6-2 7-65 |