Stadion: COURT 7 Round: 26 Ground: Hardcourt outdoor
| ITF Damen - W25 - Kasan | 2020/01/22 08:25 | Vivian Heisen v Alisa Kummel | 6-4,6-0 |
| ITF Frauen - W100 - Dubai | 2019/12/08 13:00 | Vivian Heisen v Nicoleta-Catalina Dascalu | 1-6,3-6 |
| ITF Frauen - W60 - Nantes | 2019/10/31 10:00 | Martina Caregaro v Vivian Heisen | 6-0,6-2 |
| ITF Frauen - W60 - Nantes | 2019/10/30 11:10 | Vivian Heisen v Verena Meliss | 6-4,6-4 |
| ITF Damen - W60 - Caldas da Rainha | 2019/09/25 10:00 | Amandine Hesse v Vivian Heisen | 6-4,6-0 |
| ITF Damen - W25 - Roehampton | 2019/09/20 10:00 | Nuria Parrizas-Diaz v Vivian Heisen | 7-5,6-2 |
| ITF Damen - W25 - Roehampton | 2019/09/18 11:05 | Myrtille Georges v Vivian Heisen | 1-6,1-6 |
| ITF Damen - W25 - Roehampton | 2019/09/17 09:45 | Vivian Heisen v Chanelle Van Nguyen | 6-2,6-1 |
| ITF Damen - W25 - Kasan | 2020/01/21 12:55 | Valeriya Yushchenko v Valentini Grammatikopoulou | 5-7,6-4,5-7 |
| WTA - Houston | 2019/11/11 17:15 | Valentini Grammatikopoulou v Eugenie Bouchard | 6-7,4-6 |
| ITF Damen - W60 - Colina | 2019/11/07 18:15 | Elisabetta Cocciaretto v Valentini Grammatikopoulou | 7-5,6-3 |
| ITF Damen - W60 - Colina | 2019/11/06 18:00 | Andrea Gamiz v Valentini Grammatikopoulou | 5-7,6-2,5-7 |
| ITF Damen - W60 - Asuncion | 2019/10/30 19:00 | Valentini Grammatikopoulou v Teliana Pereira | 3-6,2-6 |
| ITF Damen - W80 - Macon | 2019/10/23 18:30 | Irina Falconi v Valentini Grammatikopoulou | 6-2,6-3 |
| WTA - Moskau | 2019/10/13 12:40 | Giulia Gatto Monticone v Valentini Grammatikopoulou | 6-3,5-7,7-6 |
| WTA - Moskau | 2019/10/12 16:05 | Elitsa Kostova v Valentini Grammatikopoulou | 3-6,4-6 |