Stadium: indoor 8 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Budapest | 2021/09/28 08:55 | Eric Morris v Nicolas Parizzia | 4-6,4-6 |
| ITF M25 Budapest | 2021/09/27 10:15 | Nicolas Parizzia v Danylo Veremeychuk | 6-4,6-7,10-6 |
| ITF M25 Budapest | 2021/09/26 08:00 | Nicolas Parizzia v Radovan Michalik | 6-1,7-5 |
| ITF M15 Pirot | 2021/09/23 08:00 | Nicolas Parizzia v Federico Iannaccone | 4-6,2-6 |
| ITF M15 Pirot | 2021/09/21 12:00 | Nicolas Parizzia v Goran Zivotic | 4-6,6-4,9-11 |
| ITF M15 Pirot | 2021/09/20 08:00 | Nicolas Parizzia v Sabit Suntic | 6-4,6-2 |
| ITF M25 Sierre | 2021/09/01 08:00 | Mirko Martinez v Nicolas Parizzia | 7-5,7-6 |
| ITF M25 Sierre | 2021/08/30 09:35 | Nicolas Parizzia v Tudor S Gheorghita | 6-1,6-2 |
| ITF M25 Budapest | 2021/09/29 07:30 | Filip Duda v Omar Giacalone | 6-1,6-3 |
| ITF M25 Pardubice | 2021/09/21 10:15 | Filip Duda v Dominik Recek | 4-6,2-6 |
| ITF M25 Pardubice | 2021/09/20 09:00 | Filip Duda v Jakub Katuch | 6-1,6-1 |
| UTR Pro Tennis Series Ricany | 2021/09/19 07:00 | Filip Duda v Andrew Paulson | 0-0 |
| UTR Pro Tennis Series Ricany | 2021/09/18 07:30 | Jan Satral v Filip Duda | 6-3,6-7,4-6 |
| UTR Pro Tennis Series Ricany | 2021/09/17 09:00 | Filip Duda v Yurii Dzhavakian | 6-4,5-1 |
| UTR Pro Tennis Series Ricany | 2021/09/15 07:30 | Filip Duda v Martins Podzus | 6-2,6-0 |
| UTR Pro Tennis Series Ricany | 2021/09/14 07:30 | Filip Duda v Dominik Kellovsky | 7-6,6-3 |