| ITF Women Verbier Qual | 2018/06/24 09:00 | Jessie Aney v Sonnekus-Williams, Olivia | 6-3,6-3 |
| ITF Women Verbier Qual | 2018/06/23 08:00 | Sonnekus-Williams, Olivia v Fiacan, Maria Michaela | 6-4,6-2 |
| ITF Women Klosters | 2018/06/17 08:00 | Tayisiya Morderger v Sonnekus-Williams, Olivia | 6-0,6-0 |
| ITF Women Klosters | 2018/06/16 08:00 | Sonnekus-Williams, Olivia v Fiacan, Maria Michaela | 6-7,6-3,6-4 |
| ITF Women Hammamet | 2018/05/10 09:00 | Sonnekus-Williams, Olivia v Noelia Zeballos | 1-6,1-6 |
| ITF Women Hammamet | 2018/05/09 11:50 | Sonnekus-Williams, Olivia v Milas, Katja | 6-4,6-3 |
| Gonesse, Singles Qualifying W-WITF-FRA-06A | 2018/03/11 15:05 | Glaude, Laure Line v Sonnekus-Williams, Olivia | 6-7,6-1,6-3 |
| Manacor (Mallorca), Singles Quali W-WITF-ESP-01A | 2018/02/25 08:30 | Sonnekus-Williams, Olivia v Tahan, Maya | 1-6,3-6 |
| ITF Women Denain Qual | 2018/07/01 14:30 | Chihiro Muramatsu v Maneva Rakotomalala | 6-2,6-3 |
| ITF Women Perigueux Qual | 2018/06/23 13:50 | Maneva Rakotomalala v Halemai, Mylene | 3-6,3-6 |
| Amiens, Singles Qualifying W-WITF-FRA-09A | 2018/03/03 13:40 | Julie Belgraver v Maneva Rakotomalala | 7-5,7-6 |
| ITF Women Macon Qual | 2018/02/24 10:20 | Orange, Margaux v Maneva Rakotomalala | 6-2,6-4 |
| ITF Women Grenoble Qual | 2018/02/04 09:00 | Maneva Rakotomalala v Mallaurie Noel | 2-6,2-6 |
| ITF Women Grenoble Qual | 2018/02/03 09:35 | Maneva Rakotomalala v Juliette Mazzoni | 6-4,6-0 |
| Andrezieux-Boutheon, Qual. Simples W-WITF-FRA-05A | 2018/01/20 17:50 | Kilnarova, Monika v Maneva Rakotomalala | 6-3,6-2 |
| ITF Women Joue-Les-Tours Qual | 2017/10/14 08:00 | Ekaterina Kazionova v Maneva Rakotomalala | 4-6,6-3,6-3 |