Stadium: Court 2 Round: 24 Ground: Clay
| ITF W25 Denain | 2021/06/15 11:50 | Guiomar Maristany Zuleta De Reales v Sina Herrmann | 6-1,6-3 |
| ITF W60 Saint-Gaudens | 2021/05/10 08:45 | Astakhova, Darya v Sina Herrmann | 0-6,6-4,10-6 |
| ITF W25 Oeiras | 2021/04/22 09:45 | Rebecca Marino v Sina Herrmann | 6-3,6-2 |
| ITF W25 Oeiras | 2021/04/20 10:00 | Olga Parres Azcoitia v Sina Herrmann | 6-7,3-6 |
| ITF W25 Oeiras | 2021/04/19 11:25 | Sina Herrmann v Elsa Jacquemot | 6-4,6-4 |
| ITF W25 Oeiras | 2021/04/18 12:00 | Sina Herrmann v Dzalamidze, Natela | 6-2,6-1 |
| ITF W60 Oeiras | 2021/04/13 15:30 | Sina Herrmann v Despina Papamichail | 2-6,6-1,6-7 |
| ITF W60 Oeiras | 2021/04/12 12:00 | Lea Boskovic v Sina Herrmann | 5-7,3-6 |
| ITF W25 Jonkoping | 2021/06/15 08:10 | Zuger, Joanne v Zaja, Anna | 5-7,4-6 |
| ITF W25 Santo Domingo | 2021/06/10 13:00 | Zuger, Joanne v Ana Sofia Sanchez | 1-6,0-6 |
| ITF W25 Santo Domingo | 2021/06/09 16:35 | Nagi Hanatani v Zuger, Joanne | 6-7,0-6 |
| ITF W25 Santo Domingo | 2021/06/08 14:50 | Zuger, Joanne v Amy Zhu | 7-5,6-3 |
| ITF W25 Santo Domingo | 2021/06/07 15:00 | Zuger, Joanne v Kadleckova, Michaela | 6-1,6-2 |
| ITF W25 Santo Domingo | 2021/06/03 18:20 | Marina Bassols Ribera v Zuger, Joanne | 6-2,3-6,6-3 |
| ITF W25 Santo Domingo | 2021/06/02 18:00 | Olivia Lincer v Zuger, Joanne | 2-6,4-6 |
| ITF W25 Santo Domingo | 2021/06/01 13:00 | Zuger, Joanne v Jacqueline Cabaj Awad | 6-3,6-0 |