Stadium: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF W15 Santo Domingo | 2021/11/30 14:00 | Rocio L Espinal Plaza v Williams, Sophie | 0-6,0-6 |
| 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 Santo Domingo | 2021/12/01 13:30 | Juliette Mazzoni v Wijesundera, Rushri | 1-6,3-6 |
| ITF W15 Guatemala | 2021/11/24 15:25 | Paris Corley v Wijesundera, Rushri | 6-3,6-3 |
| ITF W15 Cundinamarca | 2021/11/19 16:10 | Wijesundera, Rushri v Yuliana Monroy | 3-6,5-7 |
| ITF W15 Cundinamarca | 2021/11/18 15:40 | Wijesundera, Rushri v Fernanda Astete | 6-2,4-6,6-4 |
| ITF W15 Cundinamarca | 2021/11/16 14:30 | Wijesundera, Rushri v Cardenas Galvis, Sofia | 6-1,7-5 |
| UTR Pro Tennis Series Florida Women | 2021/11/06 15:30 | Tchakarova, Eleonore v Wijesundera, Rushri | 7-6,6-3 |
| UTR Pro Tennis Series Florida Women | 2021/11/05 14:30 | Wijesundera, Rushri v Luciana Perry | 4-6,1-6 |
| UTR Pro Tennis Series Florida Women | 2021/11/03 14:00 | Wijesundera, Rushri v Isabella B Aguirre | 6-2,2-6,5-3 |