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| Auckland Tier IV Hard | Jan 5 2003 |
| Qual 1 | Gubacsi - Marlene Weingartner(6) | 6-4 6-74 6-4 |
| Qual 2 | Tzipora Obziler-WC - Gubacsi | 6-3 6-3 |
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| Hobart Tier V Hard | Jan 12 2003 |
| Qual 1 | Gubacsi(4) - Deanna Roberts-WC | 6-2 2-6 6-2 |
| Qual 2 | Gubacsi(4) - Nuria Llagostera Vives | 6-1 6-3 |
| Qual 3 | Gubacsi(4) - Barbara Schwartz(5) | 6-2 7-63 |
| 1 | Cristina Torrens Valero - Gubacsi-Q | 3-6 6-4 6-4 |
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| Australian Open Hard | Jan 26 2003 |
| Qual 1 | Lilia Osterloh - Gubacsi(5) | 6-4 6-2 |
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| Paris Tier II Hard | Feb 9 2003 |
| Qual 1 | Gubacsi - Sophie Lefevre-WC | 6-4 6-4 |
| Qual 2 | Maria Sanchez Lorenzo - Gubacsi | 6-3 3-6 6-3 |
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| Antwerp Tier II Hard | Feb 16 2003 |
| Qual 1 | Gubacsi - Eveline Vanhyfte-WC | 7-6 6-0 |
| Qual 2 | Dally Randriantefy(8) - Gubacsi | 6-2 7-5 |
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| Indian Wells Tier I Hard | Mar 16 2003 |
| Qual 1 | Tzipora Obziler(23) - Gubacsi | 6-4 2-6 6-3 |
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| Key Biscayne Tier I Hard | Mar 30 2003 |
| Qual 1 | Marlene Weingartner(9) - Gubacsi | 6-1 6-1 |
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| Casablanca Tier V Clay | Apr 6 2003 |
| Qual 1 | Gubacsi - Kelly Liggan | 4-6 7-5 6-1 |
| Qual 2 | Gala Leon-Garcia(2) - Gubacsi | 7-63 6-4 |
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| Estoril Tier IV Clay | Apr 13 2003 |
| Qual 1 | Gubacsi - Joanna Sakowicz-Kostecka | 6-4 7-612 |
| Qual 2 | Ma. Emilia Salerni - Gubacsi | 6-3 6-3 |
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| Budapest Tier V Clay | Apr 20 2003 |
| 1 | Klara Koukalova(6) - Gubacsi-WC | 6-2 6-2 |
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| Bromma $25,000 Clay | May 18 2003 |
| 1 | Gubacsi - Anne Keothavong(7) | 6-4 6-2 |
| 2 | Gulnara Fattakhetdinova-Q - Gubacsi | 6-4 6-75 6-3 |
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| Galatina $25,000 Clay | Jun 8 2003 |
| 1 | Gubacsi - Joanna Sakowicz-Kostecka-Q | 6-3 7-5 |
| 2 | Sofia Arvidsson(5) - Gubacsi | 7-63 6-4 |
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| Vaduz $25,000 Clay | Jun 15 2003 |
| 1 | Gubacsi(4) - Gabriela Chmelinova | 6-3 6-2 |
| 2 | Gubacsi(4) - Tina Schmassmann-WC | 5-7 6-4 6-4 |
| QF | Adriana Barna - Gubacsi(4) | 6-0 6-72 6-1 |
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| Wimbledon Grass | Jul 6 2003 |
| Qual 1 | Sandra Kloesel - Gubacsi | 6-4 5-7 6-4 |
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| Vaihingen $25,000 Clay | Jul 6 2003 |
| 1 | Stephanie Gehrlein - Gubacsi(7) | 6-1 1-6 6-4 |
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| Garching B.M. $25,000 Clay | Jul 20 2003 |
| 1 | Katarina Misic - Gubacsi | 6-3 1-6 6-4 |
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| Les Contamines $25,000 Hard | Jul 27 2003 |
| 1 | Gubacsi(7) - Monique Adamczak-Q | 6-3 6-74 6-4 |
| 2 | Gubacsi(7) - Petra Russegger | 6-1 3-6 6-4 |
| QF | Nathalie Vierin(1) - Gubacsi(7) | 6-3 6-2 |
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| Cuneo $50,000 Clay | Aug 10 2003 |
| 1 | Giulia Casoni - Gubacsi | 7-65 4-6 6-3 |
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| US Open Hard | Sep 7 2003 |
| Qual 1 | Gubacsi - Evgenia Kulikovskaya(22) | 7-5 6-3 |
| Qual 2 | Stephanie Gehrlein - Gubacsi | 5-7 7-65 6-1 |
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| Bordeaux $75,000 Clay | Sep 21 2003 |
| Qual 1 | Gubacsi - Emmanuelle Edon | 6-3 6-73 6-3 |
| Qual 2 | Gubacsi - Olga Blahotova(7) | 6-0 6-2 |
| Qual 3 | Gubacsi - Evgenia Kulikovskaya(3) | 7-63 6-2 |
| 1 | Silvija Talaja(3) - Gubacsi-Q | 7-5 6-3 |
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| Biella $50,000 Clay | Sep 28 2003 |
| Qual 1 | Gubacsi(1) - Martina Babakova | 6-0 6-4 |
| Qual 2 | Gubacsi(1) - Elisa Balsamo | 6-2 2-6 6-3 |
| Qual 3 | Gubacsi(1) - Nika Ozegovic | 6-3 7-5 |
| 1 | Gubacsi-Q - Eva Birnerova | 6-3 2-6 6-4 |
| 2 | Gubacsi-Q - Darija Jurak | 6-3 6-3 |
| QF | Gubacsi-Q - Ludmila Cervanova(1) | 6-4 2-6 7-64 |
| SF | Gubacsi-Q - Libuse Prusova | 6-3 3-6 6-4 |
| F | Henrieta Nagyova - Gubacsi-Q | 6-3 6-1 |
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| Dubai $75,000 Hard | Oct 19 2003 |
| Qual 1 | Gubacsi(3) | bye |
| Qual 2 | Gubacsi(3) - Sandra Klemenschits | 6-3 7-5 |
| Qual 3 | Gubacsi(3) - Lina Stanciute(7) | 6-75 6-4 7-5 |
| 1 | Angelique Widjaja(3) - Gubacsi-Q | 2-6 6-1 6-1 |