Stadium: Court 1 Round: 54 Ground: Clay
| ITF W15 Oldenzaal | 2019/08/13 07:30 | Diana Martynov v Sem Wensveen | 2-6,0-6 |
| ITF W15 Savitaipale | 2019/08/01 09:25 | Sem Wensveen v Sofia Nami Samavati | 1-6,5-7 |
| ITF W15 Savitaipale | 2019/07/31 10:30 | Sem Wensveen v Tamara Barad Itzhaki | 6-1,6-7,6-1 |
| ITF W15 Tampere | 2019/07/23 11:30 | Sofia Nami Samavati v Sem Wensveen | 3-6,7-5,6-2 |
| ITF W25 Den Haag | 2019/07/02 09:45 | Despina Papamichail v Sem Wensveen | 7-5,6-0 |
| ITF W25 Den Haag | 2019/07/01 07:30 | Sem Wensveen v Melanie Klaffner | 3-6,6-2,11-9 |
| ITF W15 Alkmaar | 2019/06/26 14:20 | Sem Wensveen v Eva Vedder | 4-6,2-6 |
| ITF W15 Alkmaar | 2019/06/25 08:00 | Sem Wensveen v Dewi Dijkman | 7-6,6-2 |
| ITF W15 Olomouc | 2019/08/06 08:00 | Sina Herrmann v Jana Jablonovska | 7-5,3-6,1-10 |
| WTA Karlsruhe | 2019/07/28 11:00 | Stephanie Wagner v Sina Herrmann | 6-0,6-1 |
| ITF W60 Versmold | 2019/07/08 08:00 | Sina Herrmann v Agnes Bukta | 4-6,3-6 |
| ITF W25 Darmstadt | 2019/06/24 08:00 | Eleni Kordolaimi v Sina Herrmann | 7-6,6-4 |
| ITF W15 Kaltenkirchen | 2019/06/11 14:00 | Michaela Bayerlova v Sina Herrmann | 6-3,5-7,7-6 |
| ITF W15 Antalya | 2019/04/27 07:30 | Sina Herrmann v Manca Pislak | 5-7,5-7 |
| ITF W15 Antalya | 2019/04/26 07:30 | Sina Herrmann v Franziska Kommer | 6-3,6-1 |
| ITF W15 Antalya | 2019/04/25 07:30 | Chiara Grimm v Sina Herrmann | 1-6,3-6 |