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| Allentown $25,000 Hard | Jun 15 2003 |
| 1 | Peterson-WC - Sarah Riske-WC | 1-6 6-2 6-2 |
| 2 | Peterson-WC - Nicole Rencken(6) | 4-6 6-4 6-3 |
| QF | Peterson-WC - Lauren Kalvaria | 5-7 6-2 7-64 |
| SF | Peterson-WC - Jessica Kirkland | 6-3 6-3 |
| F | Diana Ospina(7) - Peterson-WC | 2-6 6-2 6-0 |
| | |
| Edmond $10,000 Hard | Jun 29 2003 |
| Qual 1 | Peterson(6) | bye |
| Qual 2 | Peterson(6) - Kailey Meisinger | 6-0 1-0 |
| Qual 3 | Peterson(6) - Judit Trunkos | 6-0 6-1 |
| Qual 4 | Peterson(6) - Andrea Remynse | 7-65 2-6 6-2 |
| 1 | Milangela Morales(6) - Peterson-Q | 7-5 7-65 |
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| Los Gatos $50,000 Hard | Jul 6 2003 |
| 1 | Peterson-WC - Tracy Almeda-Singian | 6-1 3-3 |
| 2 | Peterson-WC - Nicole Rencken | 6-3 6-76 6-3 |
| QF | Amber Liu-WC - Peterson-WC | 6-3 4-6 6-1 |
| | |
| College Park $25,000 Hard | Jul 13 2003 |
| Qual 1 | Peterson(11) - Kokoro Takehara | 6-0 6-1 |
| Qual 2 | Peterson(11) - Mayumi Yamamoto | 6-2 6-3 |
| 1 | Peterson-Q - Petra Rampre(8) | 7-63 6-4 |
| 2 | Lioudmila Skavronskaia - Peterson-Q | 1-6 6-2 6-4 |
| | |
| Baltimore $10,000 Hard | Jul 20 2003 |
| 1 | Peterson(3) - Emily Mowery-WC | 6-0 6-2 |
| 2 | Peterson(3) - Mayumi Yamamoto | 6-3 6-1 |
| QF | Peterson(3) - Tara Iyer-Q | 6-4 6-2 |
| SF | Peterson(3) - Shikha Uberoi(1) | 6-1 6-2 |
| F | Olga Puchkova - Peterson(3) | 6-2 6-4 |
| | |
| Louisville $50,000 Hard | Aug 3 2003 |
| Qual 1 | Melanie Marois - Peterson-WC | 4-6 6-3 6-1 |
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| US Open Hard | Sep 7 2003 |
| Qual 1 | Lilia Osterloh - Peterson-WC | 3-6 6-3 6-4 |
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| Peachtree City $25,000 Hard | Sep 14 2003 |
| Qual 1 | Peterson(11) - Arpi Kojian | 6-4 6-4 |
| Qual 2 | Amber Liu(2) - Peterson(11) | 6-2 6-3 |
| 1 | Edina Gallovits-Hall(7) - Peterson-LL | 6-4 0-6 6-1 |
| | |
| Columbus $50,000 Hard | Sep 21 2003 |
| 1 | Peterson-WC - Vilmarie Castellvi-WC | 6-3 7-68 |
| 2 | Peterson-WC - Gisela Dulko | 6-3 1-6 6-0 |
| QF | Teryn Ashley - Peterson-WC | 7-5 6-3 |
| | |
| Raleigh $25,000 Clay | Sep 28 2003 |
| 1 | Erica Krauth - Peterson | 7-65 4-6 6-0 |
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| Greenville $25,000 Clay | Oct 5 2003 |
| Qual 1 | Peterson(1) | bye |
| Qual 2 | Stacia Fonseca(16) - Peterson(1) | 7-64 3-6 7-66 |
| 1 | Mariana Diaz-Oliva(1) - Peterson-LL | 5-7 6-4 6-3 |
| | |
| Sedona $50,000 Hard | Oct 19 2003 |
| Qual 1 | Peterson(2) | bye |
| Qual 2 | Peterson(2) - Kim Grant | 6-0 7-65 |
| Qual 3 | Jamea Jackson(5) - Peterson(2) | 6-2 6-3 |
| 1 | Maria Elena Camerin(3) - Peterson-LL | 6-4 6-3 |
| | |
| Philadelphia Tier II Hard | Nov 2 2003 |
| Qual 1 | Anna-Lena Groenefeld(5) - Peterson-WC | 6-4 6-2 |