Stadium: Center Court Round: 44
| ITF Women Leipzig | 2018/08/12 09:00 | Horackova, Gabriela v Heisen, Vivian | 7-5,4-6,1-6 |
| Koksijde, Singles W-WITF-BEL-04A | 2018/08/07 09:10 | Marie Benoit v Heisen, Vivian | 6-0,2-6,6-3 |
| ITF Women Bad Saulgau | 2018/08/01 12:05 | Julia Grabher v Heisen, Vivian | 6-2,6-3 |
| WTA Moscow Qual | 2018/07/22 09:40 | Heisen, Vivian v Olga Danilovic | 4-6,4-6 |
| Astana, Singles W-WITF-KAZ-05A | 2018/07/17 04:00 | Sharipova, Sabina v Heisen, Vivian | 5-7,6-1,6-3 |
| ITF Women Torino | 2018/07/11 09:00 | Heisen, Vivian v Zarycka, Anastatsia | 6-4,4-6,1-6 |
| ITF Women Torino | 2018/07/10 10:05 | Heisen, Vivian v Alice Rame | 6-2,6-3 |
| ITF Women Aschaffenburg | 2018/07/04 15:45 | Zaja, Anna v Heisen, Vivian | 6-4,6-1 |
| ITF Women Hechingen | 2018/08/09 15:30 | Anna Gabric v Ekaterine Gorgodze | 2-6,1-6 |
| ITF Women Hechingen | 2018/08/08 09:00 | Rubini, Stefania v Anna Gabric | 1-6,5-7 |
| ITF Women Bad Saulgau Qual | 2018/07/30 14:50 | Anna Gabric v Stephanie Wagner | 0-6,3-6 |
| ITF Women Horb | 2018/07/26 14:45 | Katharina Hobgarski v Anna Gabric | 6-7,6-0,6-1 |
| ITF Women Horb | 2018/07/25 14:05 | Sofia Shapatava v Anna Gabric | 6-3,3-6,1-6 |
| ITF Women Versmold Qual | 2018/07/09 15:35 | Anna Gabric v Despina Papamichail | 1-6,4-6 |
| ITF Women Versmold Qual | 2018/07/08 14:00 | Yana Morderger v Anna Gabric | 3-6,1-6 |
| ITF Women Aschaffenburg | 2018/07/05 11:00 | Basak Eraydin v Anna Gabric | 6-1,6-1 |