Stadium: Court 1 Round: 27
| ITF Women Montreux | 2018/09/06 11:00 | Zanevska, Maryna v Zimmermann, Kimberley | 2-6,6-3,1-6 |
| ITF Women Montreux | 2018/09/05 08:00 | Zimmermann, Kimberley v Andreea Mitu | 6-2,6-2 |
| ITF Women Bagnatica | 2018/09/01 14:00 | Jasmine Paolini v Zimmermann, Kimberley | 7-6,6-1 |
| ITF Women Bagnatica | 2018/08/29 12:00 | Zimmermann, Kimberley v Ylena In-Albon | 7-5,4-6,6-4 |
| ITF Women Bagnatica | 2018/08/28 07:30 | Zanevska, Maryna v Zimmermann, Kimberley | 6-2,3-6,2-6 |
| ITF Women LPD Gran Canaria | 2018/08/17 11:45 | Chloe Paquet v Zimmermann, Kimberley | 6-2,7-6 |
| ITF Women LPD Gran Canaria | 2018/08/16 11:35 | Martina Colmegna v Zimmermann, Kimberley | 6-3,5-7,2-6 |
| ITF Women LPD Gran Canaria | 2018/08/15 09:00 | Mirjam Bjorklund v Zimmermann, Kimberley | 2-6,2-6 |
| ITF Women Montreux | 2018/09/06 08:00 | Osaka, Mari v Martina Trevisan | 6-3,6-2 |
| ITF Women Montreux | 2018/09/04 09:30 | Osaka, Mari v Kilnarova, Monika | 6-2,6-1 |
| ITF Women Budapest | 2018/08/25 12:40 | Osaka, Mari v Marfutina, Maria | 1-6,2-6 |
| ITF Women Braunschweig | 2018/08/22 09:00 | Zarycka, Anastatsia v Osaka, Mari | 6-4,7-5 |
| ITF Women Porto | 2018/07/24 09:30 | Sabino, Lisa v Osaka, Mari | 6-2,6-1 |
| WTA Bucharest Qual | 2018/07/14 11:15 | Claire Liu v Osaka, Mari | 6-0,3-6,6-4 |
| ITF Women Denain | 2018/07/06 09:00 | Bolsova Zadoinov, Aliona v Osaka, Mari | 6-1,6-4 |
| ITF Women Denain | 2018/07/05 11:05 | Lemoine, Quirine v Osaka, Mari | 4-6,0-6 |