Round: 25 Ground: Hardcourt outdoor
| ITF Women Heraklion | 2018/03/19 09:30 | Szupper, Marlies v Youseva, Rozalina | 7-5,6-4 |
| ITF Women Heraklion | 2018/03/18 09:30 | Szupper, Marlies v Vujovic, Milica | 6-1,7-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/01/28 08:00 | Szupper, Marlies v 길크리스트, 나드자 | 2-6,1-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/01/21 09:00 | 오가타, 하인 v Szupper, Marlies | 6-2,6-2 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/01/17 08:00 | 포타포바, 아나스타시아 v Szupper, Marlies | 6-0,6-2 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/01/15 08:00 | Szupper, Marlies v Kong, Qianxin | 7-5,6-3 |
| Stellenbosch, Singles W-C10-RSA-01A | 2017/12/06 13:15 | 시몬드스, 채넬 v Szupper, Marlies | 6-4,6-4 |
| Stellenbosch, Singles W-C10-RSA-01A | 2017/11/28 09:25 | Sainsbury, Laura v Szupper, Marlies | 6-7,6-4,6-4 |