Stadium: Campo 4 Round: 54
| ITF Women Caserta | 2018/05/21 12:05 | Matteucci, Alice v Heisen, Vivian | 6-3,6-3 |
| ITF Women Khimki | 2018/05/01 08:15 | Glushko, Julia v Heisen, Vivian | 6-3,6-2 |
| ITF Women Wiesbaden | 2018/04/25 09:00 | Ekaterine Gorgodze v Heisen, Vivian | 6-2,6-4 |
| Obidos, Singles W-WITF-POR-12A | 2018/04/19 09:00 | Gatto-Monticone, Giulia v Heisen, Vivian | 6-0,6-0 |
| Obidos, Singles W-WITF-POR-12A | 2018/04/18 09:00 | Bentes de Oliveira Pinto, Rita Maria v Heisen, Vivian | 2-6,0-6 |
| Obidos, Singles W-WITF-POR-12A | 2018/04/11 14:35 | Heisen, Vivian v Rubini, Stefania | 2-6,2-6 |
| ITF Women Trnava | 2018/02/09 13:10 | Elena Rybakina v Heisen, Vivian | 6-4,6-2 |
| ITF Women Trnava | 2018/02/08 11:30 | Stankovska, Nina v Heisen, Vivian | 1-6,4-6 |
| ITF Women Grado Qual | 2018/05/26 13:00 | Maja Chwalinska v Schaeder, Laura | 6-4,6-2 |
| ITF Women Trnava | 2018/05/18 10:00 | Maja Chwalinska v Cepede Royg, Veronica | 6-7,0-6 |
| ITF Women Trnava | 2018/05/16 10:15 | Maja Chwalinska v Falconi, Irina | 6-1,6-3 |
| ITF Women Trnava Qual | 2018/05/14 09:00 | Falconi, Irina v Maja Chwalinska | 1-6,4-6 |
| ITF Women Trnava Qual | 2018/05/13 13:00 | Maja Chwalinska v Honcova, Michaela | 6-1,6-0 |
| ITF Women Trnava Qual | 2018/05/12 11:45 | Maja Chwalinska v Lister, Cornelia | 4-6,6-4,6-4 |
| Balatonboglar, Simples W-WITF-HUN-08A | 2018/05/01 11:20 | Maja Chwalinska v Chloe Paquet | 3-6,3-6 |
| ITF Women Balatonboglar Qual | 2018/04/30 08:00 | Maja Chwalinska v Pirok, Alexa | 6-1,6-3 |