Stadion: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 - Falun | 2021/09/27 08:30 | Vladimir Ivanov v Arvid Nordquist | 3-6,6-0,10-6 |
| ITF - M25 - Jönköping | 2021/09/21 07:30 | Arvid Nordquist v Khumoyun Sultanov | 3-6,3-6 |
| ITF - M25 - Jönköping | 2021/09/20 07:30 | Arvid Nordquist v Adam Heinonen | 6-3,6-4 |
| ITF - M15 - Lodz | 2021/08/16 08:00 | Arvid Nordquist v Juliusz Bienkiewicz | 3-6,6-4,10-5 |
| ITF - M15 - Parnu | 2021/08/04 08:25 | Arvid Nordquist v Paul Valsecchi | 5-7,1-6 |
| ITF - M15 - Parnu | 2021/08/03 07:00 | Arvid Nordquist v Pavel Shchaya-Zubrov | 6-2,6-3 |
| ITF - M15 - Parnu | 2021/08/02 07:00 | Arvid Nordquist v Peetu Pohjola | 6-4,6-0 |
| ITF - M15 - Almada | 2021/07/04 13:00 | Arvid Nordquist v Eduardo Morais | 3-6,4-6 |
| ITF - M15 - Sharm El Sheikh | 2021/10/11 09:30 | Nitin Kumar Sinha v Alan Bojarski | 1-6,6-2,10-12 |
| ITF - M15 - Sharm El Sheikh | 2021/10/07 08:00 | Petr Hajek v Nitin Kumar Sinha | 6-3,6-7,6-4 |
| ITF - M15 - Sharm El Sheikh | 2021/10/06 09:35 | Nitin Kumar Sinha v Cezar Cretu | 4-6,6-1,6-2 |
| ITF - M15 - Sharm El Sheikh | 2021/10/05 08:00 | Nitin Kumar Sinha v Nico Jaeger | 6-4,6-0 |
| ITF - M15 - Sharm El Sheikh | 2021/10/04 08:00 | Nitin Kumar Sinha v Stephanos Schinas | 6-1,6-4 |
| ITF - M15 - Kairo | 2021/09/29 10:55 | Lorenzo Gagliardo v Nitin Kumar Sinha | 3-6,6-4,6-4 |
| ITF - M15 - Kairo | 2021/09/28 08:00 | Nitin Kumar Sinha v Roland Stuurman | 2-6,0-6 |
| ITF - M15 - Kairo | 2021/09/22 13:40 | Billy Harris v Nitin Kumar Sinha | 6-0,7-6 |