Stadium: Court 1 Round: 1
| Ashland, Simples W-ITF-USA-23A | 2019/07/24 16:25 | Guillermo, Lorraine M v Maegan Manasse | 3-6,1-6 |
| ITF Women Ashland Qual | 2018/07/23 16:10 | Maegan Manasse v Guillermo, Lorraine M | 6-4,6-0 |
| ITF Women Berkeley | 2018/07/18 19:00 | Guillermo, Lorraine M v Maegan Manasse | 4-6,2-6 |
| Las Vegas, Singles W-ITF-USA-08A | 2020/03/03 18:00 | Abanda, Francoise v Maegan Manasse | 7-6,6-3 |
| Las Vegas, Singles W-ITF-USA-08A | 2020/03/02 18:00 | Leduc, Catherine v Maegan Manasse | 1-6,3-6 |
| Rancho Santa Fe, Ca, Singles W-ITF-USA-05A | 2020/02/25 19:45 | Maegan Manasse v Xiaodi You | 1-6,3-6 |
| Rancho Santa Fe, Ca, Singles W-ITF-USA-05A | 2020/02/24 17:55 | Maegan Manasse v Amy Zhu | 6-4,6-2 |
| Rancho Santa Fe, Ca, Singles W-ITF-USA-05A | 2020/02/23 19:00 | Alycia Parks v Maegan Manasse | 3-6,2-6 |
| Newport Beach, USA | 2020/01/27 18:00 | Gleason, Quinn v Maegan Manasse | 6-7,7-5,7-5 |
| ITF W25 Malibu | 2020/01/16 19:00 | Amandine Hesse v Maegan Manasse | 6-0,6-3 |
| ITF W25 Malibu | 2020/01/15 22:35 | Maegan Manasse v Nagi Hanatani | 6-0,7-6 |
| US Pro Tennis Series West Coast Women | 2020/06/06 19:50 | Whittle, Sophia v Guillermo, Lorraine M | 6-2,6-2 |
| US Pro Tennis Series West Coast Women | 2020/06/06 16:00 | Mohamad, Shatoo v Guillermo, Lorraine M | 5-7,2-6 |
| US Pro Tennis Series West Coast Women | 2020/06/05 19:55 | Giuliana Olmos v Guillermo, Lorraine M | 7-6,6-7,10-5 |
| US Pro Tennis Series West Coast Women | 2020/06/05 18:05 | Hanna Chang v Guillermo, Lorraine M | 6-0,6-4 |
| US Pro Tennis Series West Coast Women | 2020/06/02 20:20 | Montez, Pamela v Guillermo, Lorraine M | 6-1,6-3 |
| US Pro Tennis Series West Coast Women | 2020/06/02 17:55 | Guillermo, Lorraine M v Ena Shibahara | 7-5,4-6,5-10 |
| Las Vegas, Singles W-ITF-USA-08A | 2020/03/02 18:00 | Charlotte Chavatipon v Guillermo, Lorraine M | 0-6,6-3,10-4 |
| Rancho Santa Fe, Ca, Singles W-ITF-USA-05A | 2020/02/24 21:10 | Guillermo, Lorraine M v Olga Danilovic | 4-6,6-2,1-6 |