Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| 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 |
| Ashland, Simples W-ITF-USA-23A | 2019/07/23 14:50 | Alycia Parks v Guillermo, Lorraine M | 4-6,2-6 |
| Ashland, Simples W-ITF-USA-23A | 2019/07/22 15:20 | Boyd, Jasmine v Guillermo, Lorraine M | 1-6,0-6 |
| ITF W60 Berkeley | 2019/07/15 22:35 | Guillermo, Lorraine M v Carter, Hayley | 4-6,6-2,4-10 |
| Honolulu, Simples W-ITF-USA-20A | 2019/07/09 00:40 | Kinard, Tori v Guillermo, Lorraine M | 2-6,6-0,10-8 |
| Denver, Singles Qualifying W-ITF-USA-28A | 2019/06/19 16:00 | Guillermo, Lorraine M v Chieh-Yu Hsu | 4-6,4-6 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/05/28 05:30 | Guillermo, Lorraine M v Jandakate, Chompoothip | 4-6,5-7 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/05/27 04:30 | Guillermo, Lorraine M v Runglerdkriangkrai, Apichaya | 6-0,6-1 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/05/21 07:45 | Peangtarn Plipuech v Guillermo, Lorraine M | 7-6,4-6,6-3 |
| ITF W60 Berkeley | 2019/07/17 21:15 | Maegan Manasse v Sachia Vickery | 4-6,4-6 |
| Honolulu, Simples W-ITF-USA-20A | 2019/07/11 20:00 | Maegan Manasse v Usue Maitane Arconada | 6-2,2-6,2-6 |
| Honolulu, Simples W-ITF-USA-20A | 2019/07/10 22:15 | Maegan Manasse v Giuliana Olmos | 7-5,6-2 |
| Hengyang, Singles W-ITF-CHN-11A | 2019/06/14 03:00 | Maegan Manasse v Sun, Ziyue | 2-6,3-6 |
| Hengyang, Singles W-ITF-CHN-11A | 2019/06/13 03:00 | Victoria Rodriguez v Maegan Manasse | 6-4,0-6,1-6 |
| Hengyang, Singles W-ITF-CHN-11A | 2019/06/12 07:30 | Maegan Manasse v Wang, Dan Ni | 6-1,6-1 |
| Shenzhen, Simples W-ITF-CHN-10A | 2019/06/07 04:10 | Maegan Manasse v Xinyu Wang | 2-6,4-6 |
| Shenzhen, Simples W-ITF-CHN-10A | 2019/06/06 04:40 | Ye, Qiu Yu v Maegan Manasse | 1-6,2-6 |