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