| Billie Jean King Cup | 2021/06/23 15:00 | Charlotte Roemer v Matia Cristiani | 6-2,6-2 |
| ITF W15 Sharm El Sheikh | 2021/02/24 14:00 | Charlotte Roemer v Erika Andreeva | 2-6,0-6 |
| ITF W15 Sharm El Sheikh | 2021/02/14 09:30 | Charlotte Roemer v Zoe Howard | 6-4,2-6,8-10 |
| ITF W25 Riba-Roja de Turia | 2019/10/08 09:05 | Charlotte Roemer v Daniela Vismane | 3-6,2-6 |
| ITF W25 Riba-Roja de Turia | 2019/10/07 13:00 | Irina Fetecau v Charlotte Roemer | 3-6,6-4,8-10 |
| ITF W25 Guayaquil | 2019/08/23 15:30 | Chieh-Yu Hsu v Charlotte Roemer | 4-6,6-1,6-1 |
| ITF W25 Guayaquil | 2019/08/22 15:00 | Charlotte Roemer v Thaisa Grana Pedretti | 6-1,6-3 |
| ITF W25 Guayaquil | 2019/08/21 15:00 | Charlotte Roemer v Nathaly Kurata | 6-0,6-1 |
| Billie Jean King Cup | 2021/06/25 15:00 | Sydney-Nicole Clarke v Guillermina Grant | 2-6,3-6 |
| Billie Jean King Cup | 2021/06/24 17:10 | Guillermina Grant v Ariana Rahmanparast | 6-3,6-2 |
| 2019 Fed Cup | 2019/04/19 14:00 | Melissa Morales v Guillermina Grant | 7-5,5-7,6-4 |
| 2019 Fed Cup | 2019/04/18 14:00 | Isid Hernandez v Guillermina Grant | 4-6,1-6 |
| 2019 Fed Cup | 2019/04/17 14:00 | Ana Julissa De Mata v Guillermina Grant | 6-4,1-6,2-6 |
| 2019 Fed Cup | 2019/04/16 14:00 | Aymet Uzcategui v Guillermina Grant | 4-6,6-1,6-4 |
| ITF Women Villa Dolores | 2018/04/14 12:00 | Guillermina Grant v Lucia Zelenka | 0-6,7-5,2-6 |
| 2017 Fed Cup | 2017/07/22 15:00 | Guillermina Grant v Natalie G E Sanchez | 5-7,6-1,6-7 |