Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Kottingbrunn | 2021/07/23 11:00 | Pavel Nejedly v Zsombor Piros | 4-6,7-6,3-6 |
| ITF M25 Kottingbrunn | 2021/07/22 10:10 | Pavel Nejedly v Martin Krumich | 6-3,4-6,6-2 |
| ITF M25 Kottingbrunn | 2021/07/20 11:10 | Pavel Nejedly v Philip Bachmaier | 6-4,7-6 |
| ITF M25 Telfs | 2021/07/14 16:00 | Lukas Neumayer v Pavel Nejedly | 2-6,6-4,6-1 |
| ITF M25 Velenje | 2021/07/08 09:25 | Cristian Rodriguez v Pavel Nejedly | 6-3,6-3 |
| ITF M25 Velenje | 2021/07/07 12:25 | Pavel Nejedly v Alessandro Bellifemine | 6-3,7-5 |
| ITF M15 Bergamo | 2021/06/22 16:45 | Matteo Arnaldi v Pavel Nejedly | 6-3,7-6 |
| Challenger Prostejov | 2021/06/14 08:30 | Alexander Erler v Pavel Nejedly | 7-5,6-3 |
| Challenger Prague | 2021/08/08 12:00 | Adrian Andreev v Aldin Setkic | 7-5,6-1 |
| Challenger Trieste | 2021/07/25 15:00 | Aldin Setkic v Viktor Durasovic | 1-6,6-7 |
| ITF M15 Doboj | 2021/07/14 08:30 | Duje Kekez v Aldin Setkic | 7-5,7-6 |
| ITF M25 Velenje | 2021/07/06 09:45 | Lenny Hampel v Aldin Setkic | 3-6,6-3,6-2 |
| Challenger Prostejov | 2021/06/13 13:55 | Jelle Sels v Aldin Setkic | 6-3,6-1 |
| ITF M15 Sarajevo | 2021/06/02 12:30 | Din Karahodza v Aldin Setkic | 6-4,6-2 |
| ITF M25 Kiseljak | 2021/05/29 10:00 | Matheus Pucinelli De Almeida v Aldin Setkic | 6-4,6-2 |
| ITF M25 Kiseljak | 2021/05/28 14:45 | Gauthier Onclin v Aldin Setkic | 3-6,6-7 |