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| Columbus $25,000 Hard | Feb 23 2003 |
| 1 | Francesca Lubiani(7) - Lehnhoff | 6-4 6-3 |
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| St. Paul $50,000 Hard | Mar 2 2003 |
| Qual 1 | Lehnhoff(6) - Leanne Baker | 6-0 6-1 |
| Qual 2 | Lehnhoff(6) - Abigail Spears | 6-3 6-0 |
| Qual 3 | Lehnhoff(6) - Bianka Lamade(1) | 6-4 3-6 6-3 |
| 1 | Evelyn Fauth - Lehnhoff-Q | 6-2 6-3 |
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| Atlanta $25,000 Hard | Mar 30 2003 |
| 1 | Zi Yan-Q - Lehnhoff-WC | 6-1 |
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| Jackson $25,000 Clay | Apr 20 2003 |
| 1 | Jana Hlavackova - Lehnhoff | 6-1 6-0 |
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| Dothan $75,000 Clay | Apr 27 2003 |
| Qual 1 | Lehnhoff(6) - Mirela Vladulescu-WC | 6-1 7-5 |
| Qual 2 | Tatiana Golovin - Lehnhoff(6) | 6-1 6-0 |
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| Sea Island $25,000 Clay | May 11 2003 |
| 1 | Diana Ospina-Q - Lehnhoff | 7-5 6-0 |
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| Los Gatos $50,000 Hard | Jul 6 2003 |
| 1 | Hana Sromova - Lehnhoff | 1-6 6-3 7-5 |
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| Oyster Bay $50,000 Hard | Jul 20 2003 |
| 1 | Alina Jidkova(3) - Lehnhoff | 6-3 3-6 7-5 |
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| Lexington $50,000 Hard | Jul 27 2003 |
| 1 | Anna-Lena Groenefeld - Lehnhoff | 6-3 6-2 |
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| Louisville $50,000 Hard | Aug 3 2003 |
| Qual 1 | Lehnhoff - Julie Ditty | 7-65 6-4 |
| Qual 2 | Lehnhoff - Carly Gullickson(6) | 6-1 6-3 |
| Qual 3 | Lehnhoff - Melanie Marois | 6-3 6-3 |
| 1 | Lehnhoff-Q - Whitney Deason-WC | 6-1 6-1 |
| 2 | Lehnhoff-Q - Ansley Cargill(2) | 6-2 6-2 |
| QF | Shenay Perry - Lehnhoff-Q | 6-3 6-1 |
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| Peachtree City $25,000 Hard | Sep 14 2003 |
| Qual 1 | Lehnhoff(5) - Amanda Augustus | 6-0 6-2 |
| Qual 2 | Lehnhoff(5) - Erica Biro | 6-1 6-0 |
| 1 | Kristina Brandi(1) - Lehnhoff-Q | 6-1 4-6 6-2 |
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| CD. Juarez $50,000 Clay | Oct 12 2003 |
| Qual 1 | Lehnhoff(7) - Dominique Van Boekel | 6-4 6-1 |
| Qual 2 | Lehnhoff(7) - Isabel Collischonn | 6-4 6-0 |
| Qual 3 | Lehnhoff(7) - Kaysie Smashey | 6-4 6-2 |
| 1 | Lehnhoff-Q - Lourdes Dominguez Lino | 6-4 6-4 |
| 2 | Lehnhoff-Q - Mariana Diaz-Oliva(4) | 6-0 6-2 |
| QF | Olga Blahotova(5) - Lehnhoff-Q | 7-64 5-7 6-4 |
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| Mexico City $25,000 Hard | Oct 19 2003 |
| Qual 1 | Lehnhoff(8) - Marcela Arroyo Vergara | 6-4 6-0 |
| Qual 2 | Lehnhoff(8) - Kaysie Smashey(11) | 6-1 6-2 |
| 1 | Jorgelina Cravero-Q - Lehnhoff-Q | 6-3 7-5 |
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| Port Pirie $25,000 Hard | Nov 16 2003 |
| Qual 1 | Lehnhoff(3) - Jennifer Tuchband | 6-3 6-2 |
| Qual 2 | Lehnhoff(3) - Bronwyn Williams-WC | 6-0 6-0 |
| Qual 3 | Lehnhoff(3) - Gabrielle Baker(16) | 6-0 6-2 |
| 1 | Lehnhoff-Q - Dessislava Topalova | 6-4 3-6 6-3 |
| 2 | Ivana Abramovic(2) - Lehnhoff-Q | 7-61 6-4 |
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| Nuriootpa $25,000 Hard | Nov 23 2003 |
| 1 | Lehnhoff - Cindy Watson-Q | 3-6 7-5 6-1 |
| 2 | Lehnhoff - Christina Wheeler(4) | 6-4 4-6 7-5 |
| QF | Lehnhoff - Monique Adamczak | 5-7 6-3 7-5 |
| SF | Lehnhoff - Nadja Pavic-Q | 6-3 3-6 6-4 |
| F | Lehnhoff - Aiko Nakamura | 7-62 7-62 |
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| Mount Gambier $25,000 Hard | Nov 30 2003 |
| 1 | Lehnhoff - Trudi Musgrave | 6-4 6-3 |
| 2 | Lehnhoff - Samantha Stosur(3) | 6-1 6-0 |
| QF | Yuliana Fedak(5) - Lehnhoff | 6-2 6-4 |