Stadium: Court 3 Round: 14 Ground: Hardcourt indoor
| ITF M15 Kouvola | 2021/05/29 07:00 | Bega, Alessandro v Anton Matusevich | 4-6,4-6 |
| ITF M25 Sintra | 2021/09/09 11:25 | Anton Matusevich v Paul Jubb | 6-7,6-7 |
| ITF M25 Sintra | 2021/09/08 09:00 | Anton Matusevich v Daniel Little | 6-4,6-4 |
| ITF M25 Idanha-A-Nova | 2021/07/23 09:00 | Anton Matusevich v Soares Klier, Gilbert | 3-6,3-6 |
| ITF M25 Idanha-A-Nova | 2021/07/22 11:55 | Anton Matusevich v Faria, Luis | 6-3,2-6,7-6 |
| ITF M25 Idanha-A-Nova | 2021/07/20 10:45 | Anton Matusevich v Naoki Tajima | 6-3,7-5 |
| ITF M25 Idanha-A-Nova | 2021/07/17 08:30 | Nicolas Moreno De Alboran v Anton Matusevich | 7-6,6-4 |
| ITF M25 Idanha-A-Nova | 2021/07/16 10:00 | Carr, Simon v Anton Matusevich | 4-6,6-4,4-6 |
| ITF M25 Idanha-A-Nova | 2021/07/15 11:30 | Garrett Johns v Anton Matusevich | 3-6,6-1,6-7 |
| Challenger Rennes | 2021/09/14 15:50 | Bega, Alessandro v Liam Broady | 2-6,1-6 |
| Challenger Rennes | 2021/09/13 10:00 | Bega, Alessandro v Titouan Droguet | 6-2,5-7,6-4 |
| Challenger Rennes | 2021/09/12 12:00 | Bega, Alessandro v Smits, Glenn | 6-1,6-1 |
| Challenger Kyiv | 2021/09/07 12:55 | Dmitry Popko v Bega, Alessandro | 6-4,0-6,6-2 |
| ITF M25 Lesa | 2021/08/29 14:50 | Bega, Alessandro v Matteo Martineau | 5-7,6-2,2-6 |
| ITF M25 Lesa | 2021/08/28 12:30 | Bega, Alessandro v Harold Mayot | 6-3,6-4 |
| ITF M25 Lesa | 2021/08/26 10:30 | Bega, Alessandro v Federico Marchetti | 4-6,7-5,6-4 |
| ITF M25 Muttenz | 2021/08/19 07:55 | Bega, Alessandro v Pol Martin Tiffon | 2-6,6-4,4-6 |