Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF W15 Norman | 2019/12/04 20:55 | Jessica Failla v Lorraine M. Guillermo | 6-4,6-1 |
| ITF W25 Tucson | 2019/11/22 18:00 | Madeleine Kobelt v Lorraine M. Guillermo | 7-5,1-6,6-3 |
| ITF W25 Tucson | 2019/11/19 16:30 | Lorraine M. Guillermo v Gabriella Price | 6-2,6-3 |
| ITF W25 Tucson | 2019/11/18 16:30 | Lorraine M. Guillermo v Jessica Failla | 6-2,7-6 |
| ITF W25 Malibu | 2019/11/05 19:30 | Lorraine M. Guillermo v Fernanda Contreras Gomez | 6-2,3-6,5-10 |
| ITF W25 Malibu | 2019/11/04 17:00 | Lorraine M. Guillermo v Alexa Noel | 7-5,6-3 |
| ITF W80 Tyler | 2019/11/01 16:00 | Lorraine M. Guillermo v Jamie Loeb | 3-6,4-6 |
| ITF W80 Tyler | 2019/10/31 16:55 | Jaimee Fourlis v Lorraine M. Guillermo | 0-6,5-7 |
| Hawaii Open Women | 2019/12/27 03:00 | Alyssa Tobita v Yanina Wickmayer | 1-6,1-6 |
| ITF W15 Austin | 2019/10/23 15:00 | Alyssa Tobita v Elvina Kalieva | 1-6,3-6 |
| ITF W25 Waco | 2019/10/16 19:50 | Alicia Barnett v Alyssa Tobita | 6-4,6-3 |
| ITF W25 Waco | 2019/10/15 19:15 | Ayumi Miyamoto v Alyssa Tobita | 0-6,1-6 |
| ITF W25 Waco | 2019/10/14 18:00 | Jacqueline Payne v Alyssa Tobita | 0-6,0-6 |
| ITF W25 Waco | 2019/10/13 17:30 | Paula Baranano v Alyssa Tobita | 1-6,6-1,5-10 |
| ITF W15 Cancun | 2019/08/30 17:10 | Alyssa Tobita v Ingrid Gamarra Martins | 1-6,5-7 |
| ITF W15 Cancun | 2019/08/29 20:45 | Anastasia E Nefedova v Alyssa Tobita | 1-6,2-6 |