Round: 1
| US Pro Tennis Series East Coast Women | 2020/06/26 17:15 | Lorraine M. Guillermo v Pamela Montez | 5-7,2-6 |
| US Pro Tennis Series West Coast Women | 2020/06/10 17:50 | Pamela Montez v Lorraine M. Guillermo | 6-4,6-4 |
| US Pro Tennis Series West Coast Women | 2020/06/02 20:20 | Pamela Montez v Lorraine M. Guillermo | 6-1,6-3 |
| ITF W60 Templeton | 2019/09/24 17:20 | Pamela Montez v Lorraine M. Guillermo | 6-4,6-2 |
| ITF Women Saguenay | 2018/10/21 16:45 | Pamela Montez v Lorraine M. Guillermo | 6-1,6-3 |
| ITF Women Victoria | 2018/06/22 18:55 | Pamela Montez v Lorraine M. Guillermo | 6-4,6-1 |
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Lorraine M. Guillermo v Pamela Montez | 4-6,2-6 |
| UTR Pro Tennis Series California Women | 2020/07/11 16:00 | Mary Closs v Lorraine M. Guillermo | 4-6,0-6 |
| UTR Pro Tennis Series California Women | 2020/07/10 16:00 | Sophie Chang v Lorraine M. Guillermo | 6-1,6-2 |
| UTR Pro Tennis Series California Women | 2020/07/08 19:45 | Sophia Whittle v Lorraine M. Guillermo | 6-4,7-5 |
| UTR Pro Tennis Series California Women | 2020/07/08 17:15 | Lorraine M. Guillermo v Charlotte Chavatipon | 6-3,6-3 |
| UTR Pro Tennis Series California Women | 2020/07/06 18:30 | Lorraine M. Guillermo v Charlotte Chavatipon | 6-7,6-2,10-2 |
| UTR Pro Tennis Series California Women | 2020/07/06 16:00 | Sophia Whittle v Lorraine M. Guillermo | 6-4,6-2 |
| UTR Pro Tennis Series California Women | 2020/06/27 21:00 | Sophia Whittle v Lorraine M. Guillermo | 2-6,6-4,10-7 |
| UTR Pro Tennis Series California Women | 2020/06/27 17:25 | Rushri Wijesundera v Lorraine M. Guillermo | 1-6,6-1,9-11 |
| UTR Pro Tennis Series California Women | 2020/07/09 21:00 | Sophia Whittle v Pamela Montez | 6-4,6-3 |
| UTR Pro Tennis Series California Women | 2020/07/09 17:15 | Charlotte Chavatipon v Pamela Montez | 4-6,4-6 |
| UTR Pro Tennis Series California Women | 2020/07/06 19:45 | Pamela Montez v Sophia Whittle | 7-6,3-6,10-1 |
| UTR Pro Tennis Series California Women | 2020/07/06 17:15 | Pamela Montez v Charlotte Chavatipon | 6-4,6-1 |
| UTR Pro Tennis Series California Women | 2020/07/04 21:10 | Andrea Gamiz v Pamela Montez | 4-6,4-6 |
| UTR Pro Tennis Series California Women | 2020/07/04 15:00 | Pamela Montez v Sophie Chang | 6-3,6-4 |
| UTR Pro Tennis Series California Women | 2020/07/03 20:30 | Hanna Chang v Pamela Montez | 6-3,7-6 |
| UTR Pro Tennis Series California Women | 2020/07/03 16:00 | Pamela Montez v Jwany Sherif | 7-5,6-4 |