Stadium: Clay 2 Round: 25 Ground: Hardcourt outdoor
| ITF Women Toronto | 2018/10/31 16:40 | Katherine Sebov v Natalia Siedliska | 6-3,6-2 |
| ITF Women Toronto | 2018/10/29 14:00 | Kinard, Tori v Natalia Siedliska | 1-6,4-6 |
| ITF Women Toronto | 2018/10/28 16:35 | Layne Sleeth v Natalia Siedliska | 2-6,1-6 |
| ITF Women Toronto | 2018/10/27 14:00 | Mikhailuk, Alexandra v Natalia Siedliska | 2-6,4-6 |
| ITF Women Poitiers | 2018/10/20 07:30 | Natalia Siedliska v Diana Marcinkevica | 2-6,1-6 |
| ITF Women Monastir | 2018/10/10 11:10 | Genovese, Elaine v Natalia Siedliska | 3-6,6-3,6-4 |
| ITF Women Monastir | 2018/10/05 11:00 | Natalia Siedliska v Echeverria Alam, Nadia | 6-2,6-2 |
| ITF Women Monastir | 2018/10/04 08:30 | Natalia Siedliska v Tiglea, Cristina Elena | 3-6,6-2,6-2 |
| ITF Women Wanfercee-Baulet | 2018/08/20 11:40 | Sinja Kraus v Argyrokastriti, Marianne | 6-1,7-5 |
| ITF Women Wanfercee-Baulet | 2018/08/19 10:30 | Argyrokastriti, Marianne v Vehvilainen, Liisa | 6-4,6-2 |
| ITF Women Wanfercee-Baulet | 2018/08/18 12:00 | Mould, Lillian v Argyrokastriti, Marianne | 2-6,1-6 |
| ITF Women Brussels | 2018/07/20 09:00 | Lara Salden v Argyrokastriti, Marianne | 6-1,6-2 |
| ITF Women Brussels | 2018/07/18 16:05 | Argyrokastriti, Marianne v de Schutter, Zara | 7-6,5-7,7-5 |
| ITF Women Brussels Qual | 2018/07/16 11:00 | Njoze, Mirabelle v Argyrokastriti, Marianne | 1-6,0-6 |
| ITF Women Brussels Qual | 2018/07/15 09:00 | Argyrokastriti, Marianne v Petroula, Danai | 6-1,6-1 |
| ITF Women Brussels Qual | 2018/07/14 07:30 | Callios, Sandy v Argyrokastriti, Marianne | 2-6,2-6 |