| UTR Pro Tennis Series Florida Women | 2021/06/02 13:00 | Kathryn Treiber v Alexandra Pisareva | 6-2,6-3 |
| UTR Pro Tennis Series Florida Women | 2021/06/01 14:30 | Gabriella Broadfoot v Alexandra Pisareva | 3-6,7-6,6-4 |
| UTR Pro Tennis Series Nevada Women | 2021/05/29 20:00 | Alexandra Pisareva v Makenna Thiel | 6-4,1-6,0-6 |
| UTR Pro Tennis Series Nevada Women | 2021/05/27 15:00 | Alexandra Pisareva v Jeanette Mireles | 1-6,7-6,3-6 |
| UTR Pro Tennis Series Nevada Women | 2021/05/26 18:00 | Alexandra Pisareva v Vivian Ovrootsky | 2-6,6-4,1-5 |
| UTR Pro Tennis Series Nevada Women | 2021/05/25 16:30 | Alexandra Pisareva v Rebecca Lynn | 7-6,6-4 |
| UTR Pro Tennis Series Nevada Women | 2021/05/24 19:30 | Alexandra Pisareva v Karolina Jacobson | 6-4,0-6,2-5 |
| UTR Pro Tennis Series Nevada Women | 2021/05/22 15:00 | Veronika Miroshnichenko v Alexandra Pisareva | 6-3,6-4 |
| UTR Pro Tennis Series Florida Women | 2021/06/01 18:00 | Kathryn Treiber v Anastasia Sysoeva | 6-4,3-6,1-5 |
| ITF W25 Pelham | 2021/05/16 17:30 | Liga Dekmeijere v Anastasia Sysoeva | 3-6,6-0,11-9 |
| ITF W25 Naples | 2021/05/04 16:45 | Anna Siskova v Anastasia Sysoeva | 6-1,6-2 |
| ITF W25 Naples | 2021/05/03 14:00 | Dhruthi Tatachar Venugopal v Anastasia Sysoeva | 1-6,2-6 |
| UTR Pro Tennis Series Florida Women | 2021/05/02 13:00 | Anastasia Sysoeva v Teja Tirunelveli | 6-4,6-1 |
| UTR Pro Tennis Series Florida Women | 2021/05/01 17:30 | Anastasia Sysoeva v Luciana Perry | 7-5,7-5 |
| UTR Pro Tennis Series Florida Women | 2021/04/30 19:00 | Anastasia Sysoeva v Mio Mushika | 4-6,4-6 |
| UTR Pro Tennis Series Florida Women | 2021/04/29 17:30 | Anastasia Sysoeva v Mckenna Schaefbauer | 3-6,6-3,5-7 |