Stadium: Court 1 Round: 54 Ground: Hardcourt indoor
| ITF M25 - Falun | 2021/09/30 16:15 | Daniel Little v Khumoyun Sultanov | 4-6,2-6 |
| ITF M25 - Falun | 2021/09/29 12:30 | Daniel Little v Harry Wendelken | 6-3,6-3 |
| ITF M25 - Falun | 2021/09/28 13:15 | Tobias Simon v Daniel Little | 6-7,3-6 |
| ITF M25 - Falun | 2021/09/27 09:20 | Karl Friberg v Daniel Little | 1-6,2-6 |
| ITF M25 - Falun | 2021/09/26 11:00 | Nikolaj Katic v Daniel Little | 6-7,4-6 |
| ITF M25 - Jönköping | 2021/09/22 09:30 | Daniel Little v Filip Bergevi | 6-7,6-2,5-7 |
| ITF M25 - Jönköping | 2021/09/21 07:30 | Daniel Little v Patrik Niklas-Salminen | 6-4,7-6 |
| ITF M25 - Jönköping | 2021/09/20 09:20 | Daniel Little v Jonathan Stenberg | 6-4,6-2 |
| ITF M25 - Hamborg | 2021/10/17 12:25 | Tom Clavel v Mateusz Terczynski | 4-6,1-6 |
| ITF M25 - Prag | 2021/10/03 10:00 | Samuel Paulovcak v Mateusz Terczynski | 4-6,6-3,10-8 |
| Polen - National Tour | 2021/07/13 11:50 | Mateusz Terczynski v Daniel Michalski | 2-6,1-6 |
| ITF M15 - Poprad | 2021/07/05 08:00 | Illya Beloborodko v Mateusz Terczynski | 6-4,6-2 |
| ITF M15 - Poprad | 2021/07/04 11:00 | Jakub Kroslak v Mateusz Terczynski | 6-2,6-7,9-11 |
| ITF M25 - Wroclaw | 2021/06/29 08:00 | Szymon Kielan v Mateusz Terczynski | 6-3,6-2 |
| ITF M25 - Wroclaw | 2021/06/28 11:00 | Mateusz Terczynski v Lukas Palovic | 6-3,6-1 |
| ITF M25 - Wroclaw | 2021/06/27 14:00 | Dominik Langmajer v Mateusz Terczynski | 1-6,3-6 |