Stadium: C Round: 54
| ITF Women Victoria | 2018/06/22 18:55 | Montez, Pamela v Guillermo, Lorraine M | 6-4,6-1 |
| ITF Women Victoria | 2018/06/20 19:05 | Arseneault, Ariana v Guillermo, Lorraine M | 1-6,2-6 |
| ITF Women Victoria | 2018/06/18 19:50 | Haley Giavara v Guillermo, Lorraine M | 5-7,2-6 |
| ITF Women Hua Hin Qual | 2018/06/03 03:00 | Guillermo, Lorraine M v Montez, Pamela | 4-6,2-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/29 06:45 | Monica Robinson v Guillermo, Lorraine M | 6-3,7-6 |
| ITF Women Hua Hin Qual | 2018/05/28 04:30 | Guillermo, Lorraine M v Tiffany William | 6-4,6-4 |
| ITF Women Hua Hin Qual | 2018/05/27 05:00 | Guillermo, Lorraine M v Silakul, Chanikarn | 6-1,6-4 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/05/11 02:30 | Thamchaiwat, B. v Guillermo, Lorraine M | 7-6,6-3 |
| ITF Women Winnipeg Qual | 2018/07/07 18:00 | Keira Blackbeard v Jada Bui | 1-6,2-6 |
| ITF Women Corroios-Seixal | 2018/06/30 11:30 | Jada Bui v Segarelli, Francesca | 4-6,3-6 |
| ITF Women Guimaraes | 2018/06/23 09:00 | Lauren Proctor v Jada Bui | 6-2,5-7,7-6 |