Stadium: Court 5 Round: 62
| ITF Women Oldenzaal | 2018/08/13 07:30 | Vanhoutte, Chelsea v Rosnowska, Anastazja | 1-6,1-6 |
| ITF Women Oldenzaal | 2018/08/12 07:30 | Yuriko Lily Miyazaki v Rosnowska, Anastazja | 5-7,6-1,6-7 |
| ITF Women Brussels Qual | 2018/07/15 15:50 | Valentina Ivanov v Rosnowska, Anastazja | 6-3,7-6 |
| ITF Women Brussels Qual | 2018/07/14 13:10 | Maquet, Margaux v Rosnowska, Anastazja | 0-6,4-6 |
| ITF Women Versmold Qual | 2018/07/09 13:35 | Pemra Ozgen v Rosnowska, Anastazja | 6-0,6-3 |
| ITF Women Versmold Qual | 2018/07/08 14:45 | Rosnowska, Anastazja v Kommer, Franziska | 6-1,7-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/04/02 07:00 | Ekani, Irys v Rosnowska, Anastazja | 6-3,6-3 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/04/01 06:30 | Rosnowska, Anastazja v Oreshkina, Maria | 6-0,6-1 |
| ITF Women Oldenzaal | 2018/08/13 07:30 | Melgers, Annick v Diana Martynov | 7-5,6-1 |
| ITF Women Warsaw Qual | 2018/08/04 13:00 | Melgers, Annick v Szmit, Karolina | 2-6,5-7 |
| Matchs amicaux U18 | 2018/07/09 11:30 | Melgers, Annick v Noa Liauw A Fong | 3-6,0-6 |
| Matchs amicaux U18 | 2018/07/08 14:00 | Melgers, Annick v Gouvernante, Donnaroza | 6-3,7-5 |
| ITF Women Den Haag Qual | 2018/06/30 09:30 | Szupper, Marlies v Melgers, Annick | 6-3,6-4 |
| ITF Women Alkmaar | 2018/06/27 10:45 | Melgers, Annick v Yudanov, Marina | 3-6,3-6 |
| Cairo, Singles W-WITF-EGY-02A | 2018/05/09 10:20 | Riya Bhatia v Melgers, Annick | 4-6,6-3,6-3 |
| Cairo, Singles W-WITF-EGY-02A | 2018/04/29 10:00 | Melgers, Annick v Stephanie Judith Visscher | 2-6,4-6 |