Stadium: Court 1 Round: 54
| ITF Women Monastir | 2018/10/10 11:10 | Elaine Genovese v Natalia Siedliska | 3-6,6-3,6-4 |
| ITF Women Monastir | 2018/10/05 11:00 | Natalia Siedliska v Nadia Echeverria Alam | 6-2,6-2 |
| ITF Women Monastir | 2018/10/04 08:30 | Natalia Siedliska v Cristina Elena Tiglea | 3-6,6-2,6-2 |
| ITF Women Monastir | 2018/10/02 11:00 | Natalia Siedliska v Audrey Dabomve | 7-6,6-1 |
| ITF Women Haren | 2018/08/31 09:00 | Yukina Saigo v Natalia Siedliska | 4-6,4-6 |
| ITF Women Haren | 2018/08/30 13:45 | Maria Paulina Perez Garcia v Natalia Siedliska | 4-6,0-6 |
| ITF Women Haren | 2018/08/28 08:00 | Dewi Dijkman v Natalia Siedliska | 0-6,2-6 |
| ITF Women Rotterdam | 2018/08/25 15:30 | Marina Bassols Ribera v Natalia Siedliska | 6-2,6-2 |
| ITF Women Joue-Les-Tours | 2018/10/18 14:40 | Diana Marcinkevica v Tessah Andrianjafitrimo | 6-4,4-6,4-6 |
| ITF Women Joue-Les-Tours | 2018/10/17 09:00 | Diana Marcinkevica v Jesika Maleckova | 6-2,7-5 |
| ITF Women Joue-Les-Tours | 2018/10/15 16:00 | Jaqueline Adina Cristian v Diana Marcinkevica | 1-6,6-3,5-7 |
| ITF Women Obidos | 2018/10/09 10:00 | Lisa Sabino v Diana Marcinkevica | 5-7,6-4,6-0 |
| ITF Women Obidos | 2018/10/04 09:30 | Diana Marcinkevica v Mirjam Bjorklund | 6-2,1-6,0-6 |
| ITF Women Obidos | 2018/10/02 10:00 | Diana Marcinkevica v Mariam Bolkvadze | 6-4,6-1 |
| ITF Women Obidos | 2018/09/28 11:15 | Diana Marcinkevica v Giulia Gatto Monticone | 3-6,4-6 |
| ITF Women Obidos | 2018/09/27 12:50 | Diana Marcinkevica v Cristina Bucsa | 6-4,6-2 |