Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF W25 Naples | 2021/11/15 14:30 | Williams, Sophie v Pierre-Louis, Kariann | 4-6,2-6 |
| ITF W25 Florence | 2021/10/13 15:10 | Jia-Jing Lu v Williams, Sophie | 6-1,6-2 |
| ITF W25 Florence | 2021/10/12 15:30 | Olivia Tjandramulia v Williams, Sophie | 6-2,5-7,4-10 |
| ITF W25 Florence | 2021/10/11 17:00 | Gupta, Arushi v Williams, Sophie | 0-6,1-6 |
| ITF W15 Lubbock | 2021/09/27 15:00 | Williams, Sophie v McCartney Kessler | 0-6,2-6 |
| ITF - W15 Monastir | 2021/07/26 10:30 | Pielet, Gianna v Williams, Sophie | 6-1,6-4 |
| ITF - W15 Monastir | 2021/07/25 14:00 | Williams, Sophie v Lopez, Daniela Macarena | 7-5,6-2 |
| ITF - W15 Monastir | 2021/07/20 09:30 | Vineetha Mummadi v Williams, Sophie | 6-0,6-1 |