| Hammamet, Singles Qualifying W-C10-TUN-27A | 2018/05/10 09:00 | Sonnekus-Williams, Olivia v ノエリア・ゼバロス | 1-6,1-6 |
| Hammamet, Singles Qualifying W-C10-TUN-27A | 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 | グラウデ,ラウレ・ライン 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 タハン,マヤ | 1-6,3-6 |
| Vinaros, Singles W-C10-ESP-17A | 2017/11/04 09:00 | Sonnekus-Williams, Olivia v エスター・L・アルカラズ | 0-6,0-6 |
| ITF Women Sant Cugat Qual | 2017/10/28 10:00 | ズー・ジャユン v Sonnekus-Williams, Olivia | 6-1,6-3 |
| ITF Women Riba-Roja De Turia | 2017/10/14 09:00 | Sonnekus-Williams, Olivia v アルムデナ S | 1-6,2-6 |
| Hammamet, Singles Qualifying W-C10-TUN-27A | 2017/09/20 11:25 | Daniilidou, Eleni v Sonnekus-Williams, Olivia | 6-0,6-2 |