Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Cancun | 2021/10/06 14:00 | Collens, Brittany v Stacey Fung | 1-6,0-6 |
| ITF W15 Cancun | 2021/10/05 14:00 | Collens, Brittany v Anna Rogers | 0-6,0-6 |
| ITF W15 Cancun | 2021/10/04 16:30 | Collens, Brittany v Yapur Lopez, Maria Ignacia | 7-6,6-2 |
| ITF W15 Cancun | 2021/09/29 15:30 | Collens, Brittany v Darja Semenistaja | 1-6,5-7 |
| ITF W15 Cancun | 2021/09/28 15:30 | Collens, Brittany v Katya Ramirez | 6-2,6-3 |
| ITF W15 Cancun | 2021/09/27 17:30 | Collens, Brittany v Natalia Fehr | 6-0,6-0 |
| ITF W15 Cancun | 2021/09/21 15:30 | Darja Semenistaja v Collens, Brittany | 6-0,6-3 |
| ITF - W15 Monastir | 2021/08/30 14:45 | Collens, Brittany v Selina Atay | 3-6,2-6 |
| ITF W15 Cancun | 2021/10/12 15:30 | Stampfli, Breana v Natsuho Arakawa | 2-6,3-6 |
| ITF W15 Cancun | 2021/10/04 16:30 | Pierre-Louis, Kariann v Stampfli, Breana | 3-6,6-0,11-9 |
| ITF W15 Cancun | 2021/09/29 17:45 | Stampfli, Breana v Louise Kwong | 1-6,7-6,1-6 |
| Tacarigua, Singles W-ITF-TTO-02A | 2019/05/23 21:00 | Stampfli, Breana v Maileen Nuudi | 7-5,6-0 |
| Tacarigua, Singles W-ITF-TTO-02A | 2019/05/17 19:30 | Stampfli, Breana v Stevens, Lexie | 5-7,3-6 |
| Tacarigua, Singles W-ITF-TTO-02A | 2019/05/16 22:30 | Stampfli, Breana v Rose, Anneliese | 6-2,6-1 |
| Tacarigua, Singles W-ITF-TTO-02A | 2019/05/15 23:55 | Tanasescu, Maria v Stampfli, Breana | 6-3,6-7,1-6 |
| Fed Cup, Groupe Mondial | 2019/04/19 15:00 | Thompson, Danielle Andrea v Stampfli, Breana | 6-7,5-7 |