Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| 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 |
| 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 |
| Fed Cup, Groupe Mondial | 2019/06/15 05:30 | Chieh-Yu Hsu v Lynelle En Tong Lim | 6-1,6-0 |
| Fed Cup, Groupe Mondial | 2019/06/14 05:00 | Chieh-Yu Hsu v Lehnert, Katharina | 6-1,6-2 |
| Shenzhen, Simples W-ITF-CHN-10A | 2019/06/06 04:20 | Chieh-Yu Hsu v Jovic, J. | 5-7,4-6 |
| Shenzhen, Simples W-ITF-CHN-10A | 2019/06/05 05:05 | Chieh-Yu Hsu v Le Yi Liu | 6-1,6-1 |
| Shenzhen, Simples W-ITF-CHN-10A | 2019/06/04 04:10 | Chieh-Yu Hsu v Wang, Dan Ni | 6-2,6-1 |
| Shenzhen, Simples W-ITF-CHN-10A | 2019/06/03 06:25 | Chieh-Yu Hsu v Ying Zhang | 6-0,7-6 |
| Luzhou, Simples W-ITF-CHN-09A | 2019/06/01 02:00 | Fang Ying Xun v Chieh-Yu Hsu | 3-6,7-5,6-1 |
| Luzhou, Simples W-ITF-CHN-09A | 2019/05/31 04:15 | Xiaodi You v Chieh-Yu Hsu | 6-2,3-6,3-6 |