Stadium: Court 6 Round: 54
| ITF Women Templeton Qual | 2017/09/26 17:00 | Lorraine M. Guillermo v Sabrina Santamaria | 1-6,6-1,2-6 |
| ITF Women Berkeley Qual | 2018/07/16 20:50 | Sabrina Santamaria v Sabastiani Leon | 6-1,6-1 |
| ITF Women Berkeley Qual | 2018/07/15 23:05 | Sabrina Santamaria v Makenna Thiel | 6-3,6-2 |
| ITF Women Wiesbaden | 2018/04/24 12:45 | Dalma Galfi v Sabrina Santamaria | 6-4,6-2 |
| WTA Bogota Qual | 2018/04/07 16:50 | Lizette Cabrera v Sabrina Santamaria | 6-0,6-4 |
| WTA Monterrey Qual | 2018/04/02 16:00 | Sabrina Santamaria v Dalila Jakupovic | 2-6,5-7 |
| WTA Monterrey Qual | 2018/04/01 19:35 | Miyu Kato v Sabrina Santamaria | 6-1,3-6,3-6 |
| WTA Monterrey Qual | 2018/03/31 20:15 | Nadia Podoroska v Sabrina Santamaria | 4-6,6-2,5-7 |
| ITF Women Heraklion | 2018/03/15 12:00 | Francesca Jones v Sabrina Santamaria | 7-6,6-1 |
| ITF Women Berkeley Qual | 2018/07/16 21:35 | Nicole Mossmer v Lorraine M. Guillermo | 7-5,3-6,1-6 |
| ITF Women Berkeley Qual | 2018/07/15 23:40 | Angelina Gabueva v Lorraine M. Guillermo | 6-3,1-6,2-6 |
| ITF Women Winnipeg | 2018/07/12 17:25 | Lorraine M. Guillermo v Erika Sema | 4-6,3-6 |
| ITF Women Winnipeg Qual | 2018/07/08 18:50 | Lorraine M. Guillermo v Jada Bui | 6-3,6-1 |
| ITF Women Victoria | 2018/06/22 18:55 | Pamela Montez v Lorraine M. Guillermo | 6-4,6-1 |
| ITF Women Victoria | 2018/06/20 19:05 | Ariana Arseneault v Lorraine M. Guillermo | 1-6,2-6 |
| ITF Women Victoria | 2018/06/18 19:50 | Haley Giavara v Lorraine M. Guillermo | 5-7,2-6 |
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Lorraine M. Guillermo v Pamela Montez | 4-6,2-6 |