| ITF W25 Kazan | 03/12 07:00 | 45 | Nazarova, Gyulnara v Heisen, Vivian | 6-7,1-6 | |
| ITF W25 Kazan | 03/11 12:30 | 45 | Victoria Mikhaylova v Heisen, Vivian | 3-6,2-6 | |
| Moscou, Simples W-ITF-RUS-02A | 02/26 07:00 | 45 | [463] Heisen, Vivian v Varvara Gracheva [453] | 1-6,6-1,2-10 | |
| Moscou, Simples W-ITF-RUS-02A | 02/25 10:10 | 45 | [339] Polina Leykina v Heisen, Vivian [463] | 6-4,6-7,6-10 | |
| ITF W25 Altenkirchen | 02/18 15:25 | 45 | [462] Heisen, Vivian v Heise, Priscilla [464] | 2-6,1-6 | |
| ITF W25 Altenkirchen | 02/18 11:00 | 45 | [338] Polina Leykina v Heisen, Vivian [462] | 2-6,2-6 | |
| ITF W25 Trnava | 02/04 10:00 | 45 | Heisen, Vivian v Caroline Werner | 1-6,3-6 | |
| ITF W25 Kazan | 01/22 11:10 | 25 | [463] Heisen, Vivian v Anastasia Gasanova [314] | 6-4,2-6,3-6 | |
| ITF Women Minsk | 11/07 09:35 | 26 | [405] Heisen, Vivian v Susan Bandecchi [498] | 2-6,3-6 | |
| ITF Women Minsk | 11/06 07:30 | 25 | [403] Chernyshova, Maryna v Heisen, Vivian [405] | 2-6,6-1,1-6 | |
| ITF Women Minsk | 11/05 08:30 | 54 | [377] Marfutina, Maria v Heisen, Vivian [405] | 7-6,3-6,1-6 | |
| ITF Women Minsk | 11/04 12:35 | 54 | Kseniya Yersh v Heisen, Vivian | 6-4,0-6,1-6 | |
| ITF Women Oslo | 10/21 08:00 | 54 | Heisen, Vivian v Shoshyna, Anastasiya | 5-7,4-6 | |
| ITF Women Oslo | 10/20 09:30 | 54 | Heisen, Vivian v Stange, Ine Soltveit | 6-1,6-1 | |
| ITF Women Toowoomba | 10/07 03:30 | 62 | Nakisa Djamshidi v Heisen, Vivian | Walkover | |
| ITF Women Brisbane | 10/06 00:00 | 28 | [235] Perez, Ellen v Heisen, Vivian [419] | 7-6,7-6 | |
| ITF Women Brisbane | 10/05 04:00 | 27 | [287] Dalma Galfi v Heisen, Vivian [419] | 3-6,5-7 | |
| ITF Women Brisbane | 10/04 00:00 | 26 | [373] Chihiro Muramatsu v Heisen, Vivian [419] | 3-6,6-4,5-7 | |
| ITF Women Brisbane | 10/03 01:30 | 25 | [419] Heisen, Vivian v Taylor, Gabriella [175] | 6-2,6-1 | |
| ITF Women Brisbane | 10/01 02:45 | 62 | [383] Maddison Inglis v Heisen, Vivian [430] | 6-4,3-6,6-7 | |
| ITF Women Brisbane | 09/30 08:30 | 62 | Heisen, Vivian v Burrage, Jodie Anna | 6-2,7-6 | |
| ITF Women Brisbane | 09/30 06:00 | 62 | Heisen, Vivian v Fry, Sophia | 6-0,6-0 | |
| ITF Women Darwin | 09/24 00:30 | 54 | [374] Rutuja Bhosale v Heisen, Vivian [436] | 6-1,6-1 | |
| ITF Women Darwin | 09/23 03:45 | 54 | Heisen, Vivian v Talcott, Shelby | 6-1,6-1 | |
| ITF Women Cairns | 09/19 01:30 | 25 | Heisen, Vivian v Seone Mendez | 1-6,1-6 | |
| ITF Women Cairns | 09/17 00:00 | 44 | Heisen, Vivian v Alicia Smith | 6-2,6-1 | |
| ITF Women Cairns | 09/16 01:00 | 44 | Heisen, Vivian v Sun, Cyan | 6-2,6-3 | |
| ITF Women Braunschweig | 08/24 10:00 | 27 | [457] Heisen, Vivian v Jesika Maleckova [334] | 6-3,3-6,1-6 | |
| ITF Women Braunschweig | 08/23 10:00 | 26 | [276] Isabella Shinikova v Heisen, Vivian [457] | 3-6,5-7 | |
| ITF Women Braunschweig | 08/21 10:00 | 25 | [457] Heisen, Vivian v Katharina Hobgarski [326] | 6-1,7-5 |