Stadium: Center Court Round: 14 Ground: Hardcourt indoor
| WTA Saint-Malo | 2021/05/03 09:00 | Viktoriya Tomova v Vivian Heisen | 4-6,7-5,6-1 |
| WTA Saint-Malo | 2021/05/02 10:20 | Vivian Heisen v Leonie Kung | 3-6,6-4,6-2 |
| ITF W60 Bellinzona | 2021/04/06 09:55 | Vivian Heisen v Maryna Zanevska | 0-6,1-6 |
| ITF W60 Bellinzona | 2021/04/05 09:35 | Svenja Ochsner v Vivian Heisen | 6-3,1-6,8-10 |
| ITF W60 Bellinzona | 2021/04/04 11:55 | Vivian Heisen v Marina Bassols Ribera | 6-1,6-3 |
| ITF W25 Kazan | 2021/03/10 07:00 | Vivian Heisen v Urszula Radwanska | 2-6,5-7 |
| ITF W25 Orlando | 2020/11/12 15:40 | Hurricane Tyra Black v Vivian Heisen | 6-4,6-1 |
| ITF W25 Orlando | 2020/11/11 16:30 | Vivian Heisen v Jessica Livianu | 2-6,6-2,10-3 |
| ITF W25 Seville | 2021/10/20 09:55 | Martina Di Giuseppe v Lina Gjorcheska | 1-6,6-4,1-6 |
| ITF W25 Seville | 2021/10/19 10:50 | Martina Di Giuseppe v Martha Matoula | 6-3,6-4 |
| ITF W25 Loule | 2021/10/06 12:40 | Martina Di Giuseppe v Nastasja Schunk | 2-6,1-6 |
| ITF W25 Lisbon | 2021/09/28 10:50 | Angela Fita Boluda v Martina Di Giuseppe | 6-2,6-4 |
| ITF W80 Wiesbaden | 2021/09/23 08:30 | Alexandra Ignatik v Martina Di Giuseppe | 6-2,6-3 |
| ITF W80 Wiesbaden | 2021/09/21 10:30 | Martina Di Giuseppe v Reka-Luca Jani | 7-6,7-6 |
| ITF W80 Valencia | 2021/09/12 12:30 | Martina Di Giuseppe v Amanda Carreras | 4-6,3-6 |
| ITF W60 Montreux | 2021/09/09 17:45 | Cagla Buyukakcay v Martina Di Giuseppe | 6-2,7-5 |