Stadium: South 4 Round: 25 Ground: Hardcourt indoor
| ITF Women Norman Qual | 2017/11/13 17:00 | Lisa-Marie Rioux v Lorraine M. Guillermo | 2-6,1-6 |
| ITF W60 Templeton | 2019/09/24 17:20 | Pamela Montez v Lorraine M. Guillermo | 6-4,6-2 |
| ITF W60 Templeton | 2019/09/23 21:15 | Sarah Lee v Lorraine M. Guillermo | 3-6,3-6 |
| ITF W25 Redding | 2019/09/10 21:25 | Lorraine M. Guillermo v Gabriela Talaba | 3-6,6-4,4-6 |
| ITF W25 Fort Worth | 2019/08/03 17:15 | Lorraine M. Guillermo v Chanelle Van Nguyen | 6-4,5-7,3-6 |
| ITF W25 Fort Worth | 2019/08/02 14:00 | Lorraine M. Guillermo v Sophia Whittle | 6-0,7-6 |
| ITF W25 Fort Worth | 2019/08/01 14:00 | Lorraine M. Guillermo v Amy Zhu | 6-4,6-3 |
| ITF W25 Fort Worth | 2019/07/31 16:55 | Gabriela Talaba v Lorraine M. Guillermo | 3-6,6-1,4-6 |
| ITF W60 Ashland | 2019/07/24 16:25 | Lorraine M. Guillermo v Maegan Manasse | 3-6,1-6 |
| ITF W15 Lawrence | 2019/09/11 15:00 | Dalayna Hewitt v Lisa-Marie Rioux | 7-5,4-6,6-2 |
| ITF W15 Lawrence | 2019/09/10 14:00 | Lisa-Marie Rioux v Muskan Mahajan | 6-1,6-3 |
| ITF W15 Lawrence | 2019/09/09 14:00 | Lisa-Marie Rioux v Kailey Evans | 6-1,6-4 |
| ITF W25 Taipei | 2019/08/02 02:00 | Valeria Savinykh v Lisa-Marie Rioux | 6-4,6-4 |
| ITF W25 Taipei | 2019/08/01 03:20 | Lisa-Marie Rioux v Haruka Kaji | 6-4,6-1 |
| ITF W25 Taipei | 2019/07/31 02:00 | Lisa-Marie Rioux v Riya Bhatia | 2-6,6-1,6-4 |
| ITF W25 Taipei | 2019/07/30 02:00 | Sakura Hondo v Lisa-Marie Rioux | 6-7,4-6 |
| ITF W25 Taipei | 2019/07/29 02:00 | Lisa-Marie Rioux v Hx Izabella Tan | 6-0,6-0 |