Stadium: C Round: 62 Ground: Hardcourt outdoor
| Wesley Chapel, Singles Qualifying W-WITF-USA-03A | 2018/01/21 14:30 | Reka-Luca Jani v Guillermo, Lorraine M | 5-7,6-2,6-2 |
| ITF Women Orlando Qual | 2018/01/14 15:00 | Guillermo, Lorraine M v Dasha Ivanova | 4-6,6-2,4-6 |
| Daytona Beach, Singles Qualifying W-WITF-USA-01A | 2018/01/07 15:00 | Pierson, Rachel May v Guillermo, Lorraine M | 6-4,7-5 |
| ITF Women Norman Qual | 2017/11/14 16:00 | Pierson, Rachel May v Guillermo, Lorraine M | 6-2,6-4 |
| ITF Women Norman Qual | 2017/11/13 17:00 | Lisa-Marie Rioux v Guillermo, Lorraine M | 2-6,1-6 |
| ITF Women Norman Qual | 2017/11/12 17:00 | Iyengar, Sumvruta v Guillermo, Lorraine M | 2-6,0-6 |
| ITF Women Toronto Qual | 2017/10/30 14:00 | Guillermo, Lorraine M v Bovina, Elena | 4-6,2-6 |
| ITF Women Toronto Qual | 2017/10/29 14:00 | Alycia Parks v Guillermo, Lorraine M | 2-6,5-7 |
| Wesley Chapel, Singles Qualifying W-WITF-USA-03A | 2018/01/23 16:50 | Caroline Werner v Marine Partaud | 6-3,6-2 |
| Wesley Chapel, Singles Qualifying W-WITF-USA-03A | 2018/01/22 16:00 | van Nguyen, Chanelle v Marine Partaud | 4-6,2-6 |
| Wesley Chapel, Singles Qualifying W-WITF-USA-03A | 2018/01/21 17:30 | Gabueva, Angelina v Marine Partaud | 1-6,2-6 |
| ITF Women Orlando Qual | 2018/01/15 15:00 | Marine Partaud v Marcela Zacarias | 5-7,3-6 |
| ITF Women Orlando Qual | 2018/01/14 15:00 | van Nguyen, Chanelle v Marine Partaud | 4-6,1-6 |
| Daytona Beach, Singles Qualifying W-WITF-USA-01A | 2018/01/09 14:30 | Anna Danilina v Marine Partaud | 6-2,6-0 |
| Daytona Beach, Singles Qualifying W-WITF-USA-01A | 2018/01/08 19:30 | Wijesundera, Rushri v Marine Partaud | 4-6,2-6 |
| Daytona Beach, Singles Qualifying W-WITF-USA-01A | 2018/01/07 18:00 | Victoria Hu v Marine Partaud | 0-6,5-7 |