Stadium: C Round: 28
| ITF Women Wiesbaden Qual | 2018/04/23 12:00 | Sibille, Constance v Natalia Siedliska | 2-6,1-6 |
| 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 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 | Dijkman, Dewi 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 Rotterdam | 2018/08/24 08:00 | Tayisiya Morderger v Natalia Siedliska | 6-1,4-6,1-6 |
| ITF Women Monastir | 2018/10/05 09:00 | Yasmine Mansouri v Sibille, Constance | 5-7,4-6 |
| ITF Women Monastir | 2018/10/04 11:40 | Sposetti, Ilaria v Sibille, Constance | 0-6,1-6 |
| ITF Women Monastir | 2018/10/03 08:30 | Guttikonda, Delisha v Sibille, Constance | 0-6,0-6 |
| ITF Women Badenweiler | 2018/09/08 12:00 | Sibille, Constance v Rebeka Masarova | 4-6,2-6 |
| ITF Women Badenweiler | 2018/09/07 09:00 | Kennel, Karin v Sibille, Constance | 1-6,1-6 |
| ITF Women Badenweiler | 2018/09/06 10:35 | Sibille, Constance v Mina Hodzic | 3-6,6-2,6-1 |
| ITF Women Badenweiler | 2018/09/04 11:10 | Sibille, Constance v Ramirez, Evita | 6-1,6-2 |
| ITF Women Wanfercee-Baulet | 2018/08/23 11:00 | Sibille, Constance v Remondina, Anna | 6-4,2-6,3-6 |