Stadium: Court 4 Round: 26 Ground: Hardcourt indoor
| UK Pro League | 2021/11/14 14:00 | Henry Patten v Anton Matusevich | 2-6,4-6 |
| UK Pro League | 2021/11/13 11:00 | Giles Hussey v Anton Matusevich | 2-6,5-7 |
| UK Pro League | 2021/11/11 16:30 | Julian Cash v Anton Matusevich | 4-6,2-6 |
| UK Pro League | 2021/11/08 13:00 | Anton Matusevich v Sean Hodkin | 6-1,6-3 |
| ITF M25 Portimao | 2021/10/28 12:45 | Laurent Lokoli v Anton Matusevich | 6-2,6-2 |
| ITF M25 Portimao | 2021/10/27 14:20 | Naoki Nakagawa v Anton Matusevich | 2-6,2-6 |
| ITF M25 Quinta Do Lago | 2021/10/22 09:30 | Kaichi Uchida v Anton Matusevich | 6-4,5-7,6-4 |
| ITF M25 Quinta Do Lago | 2021/10/21 11:35 | Mick Veldheer v Anton Matusevich | 4-6,6-4,4-6 |
| ITF M25 Austin | 2021/11/17 20:00 | Eliot Spizzirri v Constantin Frantzen | 6-3,6-3 |
| ITF M25 Austin | 2021/11/16 16:50 | Constantin Frantzen v Miguel Angel Cabrera | 6-2,6-4 |
| ITF M25 Austin | 2021/11/15 18:00 | Nevin Arimilli v Constantin Frantzen | 4-6,4-6 |
| ITF M25 Harlingen | 2021/11/09 15:00 | Noah Schachter v Constantin Frantzen | 7-6,6-2 |
| ITF M25 Fayetteville | 2021/11/02 14:00 | Constantin Frantzen v Mathieu Scaglia | 4-6,5-7 |
| ITF M25 Fayetteville | 2021/11/01 14:00 | Blu Baker v Constantin Frantzen | 7-6,3-6,5-10 |
| ITF M15 Lubbock | 2021/09/26 15:00 | Constantin Frantzen v Sven Lah | 3-6,6-1,4-10 |
| ITF M25 Fort Worth | 2019/10/21 15:00 | Constantin Frantzen v Spencer Papa | 5-7,3-6 |