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