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| Belfort $25,000 Hard | Feb 2 2003 |
| 1 | Anne Keothavong(8) - Topalova | 6-1 2-0 |
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| Southampton $25,000 Hard | Feb 16 2003 |
| 1 | Topalova - Julie Pullin(7) | 1-6 6-4 6-0 |
| 2 | Giulia Casoni-Q - Topalova | 7-66 6-2 |
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| Redbridge $25,000 Hard | Feb 23 2003 |
| Qual 1 | Topalova(2) - Holly Bagshaw-WC | 6-3 6-1 |
| Qual 2 | Capucine Rousseau(12) - Topalova(2) | 6-3 6-3 |
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| Kaunas $25,000 Carpet | Mar 16 2003 |
| 1 | Lina Stanciute-WC - Topalova | 6-1 6-79 6-2 |
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| Cavtat $10,000 Clay | Apr 13 2003 |
| 1 | Petra Dizdar-Q - Topalova(2) | 6-4 1-6 6-1 |
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| Fed Cup Clay | Apr 26 2003 |
| | Tinatin Kavlashvili-geo - Topalova | 6-1 6-0 |
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| Maglie $25,000 Clay | May 4 2003 |
| 1 | Topalova - Margalita Chakhnashvili | 6-4 4-1 |
| 2 | Topalova - Sybille Bammer(2) | 6-2 6-1 |
| QF | Ivana Lisjak-Q - Topalova | 6-2 6-3 |
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| Lenzerheide $25,000 Clay | Jun 22 2003 |
| 1 | Caroline Maes(4) - Topalova | 4-6 6-1 7-66 |
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| Bastad $25,000 Clay | Jun 29 2003 |
| 1 | Magdalena Zdenovcova(2) - Topalova | 1-6 7-63 6-1 |
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| Vaihingen $25,000 Clay | Jul 6 2003 |
| Qual 1 | Topalova(3) - Antonela Voina | 6-3 3-6 6-2 |
| Qual 2 | Mariya Koryttseva(10) - Topalova(3) | 6-3 6-2 |
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| Torun $25,000 Clay | Jul 13 2003 |
| 1 | Topalova - Lana Popadic | 6-4 6-4 |
| 2 | Topalova - Ekaterina Bychkova-Q | 6-2 4-3 |
| QF | Marta Domachowska-Q - Topalova | 6-4 7-64 |
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| Garching B.M. $25,000 Clay | Jul 20 2003 |
| Qual 1 | Topalova(5) - Nika Ozegovic | 6-4 6-1 |
| Qual 2 | Topalova(5) - Christina Fitz | 6-3 6-0 |
| Qual 3 | Topalova(5) - Christiane Hoppmann | 6-4 5-7 6-3 |
| 1 | Topalova-Q - Edina Gallovits-Hall(7) | 6-1 6-0 |
| 2 | Maria Wolfbrandt - Topalova-Q | 4-6 6-4 6-4 |
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| Horb $10,000 Clay | Jul 27 2003 |
| 1 | Topalova(1) - Daniela Bercek-Q | 1-6 6-1 6-3 |
| 2 | Kirsten Flipkens - Topalova(1) | 6-4 |
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| Bielefeld $10,000 Clay | Aug 31 2003 |
| Qual 1 | Topalova(1) | bye |
| Qual 2 | Topalova(1) - Sarina Mueller | 6-1 6-0 |
| Qual 3 | Topalova(1) - Cornelia Lassonczyk | 6-1 6-3 |
| 1 | Topalova-Q - Daniela Salomon | 6-2 6-1 |
| 2 | Topalova-Q - Oxana Lyubtsova | 6-0 7-61 |
| QF | Topalova-Q - Claudia Kardys(8) | 6-2 4-6 7-5 |
| SF | Topalova-Q - Sabine Klaschka(3) | 4-6 6-3 6-2 |
| F | Christina Fitz(4) - Topalova-Q | 3-6 6-3 6-3 |
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| Denain $75,000 Clay | Sep 14 2003 |
| Qual 1 | Laura Dell'Angelo - Topalova | 6-3 6-3 |
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| Sofia $25,000 Clay | Sep 21 2003 |
| 1 | Topalova - Michelle Gerards-Q | 6-4 6-3 |
| 2 | Topalova - Adriana Barna(7) | 6-2 4-6 7-62 |
| QF | Patricia Wartusch(2) - Topalova | 6-4 2-6 7-64 |
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| Mackay $25,000 Hard | Oct 19 2003 |
| 1 | Lauren Kalvaria - Topalova(8) | 6-1 6-3 |
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| Rockhampton $25,000 Hard | Oct 26 2003 |
| 1 | Topalova - Trudi Musgrave | 6-2 6-2 |
| 2 | Topalova - Shiho Hisamatsu(6) | 4-6 6-2 6-3 |
| QF | Topalova - Monique Adamczak | 7-5 7-60 |
| SF | Topalova - Antonia Matic | 6-4 6-4 |
| F | Nina Duebbers(5) - Topalova | 7-5 6-1 |
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| Dalby $25,000 Hard | Nov 2 2003 |
| 1 | Bryanne Stewart - Topalova(8) | 7-5 6-1 |
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| Port Pirie $25,000 Hard | Nov 16 2003 |
| 1 | Jessica Lehnhoff-Q - Topalova | 6-4 3-6 6-3 |