Stadium: Court 6 Round: 54 Ground: Hardcourt outdoor
| Nonthaburi, Singles W-ITF-THA-01A | 2019/05/21 07:45 | Peangtarn Plipuech v Guillermo, Lorraine M | 7-6,4-6,6-3 |
| Charlottesville, Simples W-ITF-USA-13A | 2019/04/24 14:00 | Emily Fanning v Guillermo, Lorraine M | 1-6,7-5,7-6 |
| ITF W25 Pelham | 2019/04/09 21:30 | Honcova, Michaela v Guillermo, Lorraine M | 7-6,6-3 |
| ITF W25 Pelham | 2019/04/08 20:00 | Guillermo, Lorraine M v Ksenia Laskutova | 6-2,6-0 |
| Jackson, Singles W-ITF-USA-09A | 2019/04/02 18:45 | Zlochova, Zuzana v Guillermo, Lorraine M | 6-3,6-4 |
| Arcadia, Singles Qualifying W-ITF-USA-07A | 2019/03/14 16:00 | Elizabeth Mandlik v Guillermo, Lorraine M | 6-4,6-3 |
| Arcadia, Singles Qualifying W-ITF-USA-07A | 2019/03/12 21:40 | Redelijk, Nikki v Guillermo, Lorraine M | 1-6,7-6,5-7 |
| Carson, Singles W-ITF-USA-06A | 2019/03/08 18:15 | Guillermo, Lorraine M v Subhash, Natasha | 5-7,6-7 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/05/21 03:00 | Zakarlyuk, Marianna v Runglerdkriangkrai, Apichaya | 6-7,7-6,10-4 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/05/20 03:00 | Tumthong, Dolavee v Runglerdkriangkrai, Apichaya | 5-7,5-7 |
| ITF - W15 Sharm El Sheikh | 2019/04/10 08:00 | Runglerdkriangkrai, Apichaya v Celik, Susanne | 3-6,4-6 |
| ITF - W15 Sharm El Sheikh | 2019/04/01 12:30 | Siskova, Eva v Runglerdkriangkrai, Apichaya | 3-6,7-5,10-5 |
| ITF - W15 Sharm El Sheikh | 2019/02/20 12:00 | Runglerdkriangkrai, Apichaya v Morgina, Anna | 4-6,4-6 |
| ITF - W15 Sharm El Sheikh | 2019/02/11 09:30 | Runglerdkriangkrai, Apichaya v Casteleyn, Emily | 3-6,5-7 |
| ITF - W15 Sharm El Sheikh | 2019/02/04 12:00 | Kajsa Rinaldo Persson v Runglerdkriangkrai, Apichaya | 6-3,6-3 |
| ITF - W15 Sharm El Sheikh | 2019/02/04 07:30 | Nieuwboer, Perla v Runglerdkriangkrai, Apichaya | 3-6,7-5,7-10 |