Stadium: Court 9 Round: 25 Ground: Clay
| ITF M15 - Bratislava | 2021/03/03 12:10 | Constantin Bittoun Kouzmine v Kristof Minarik | 2-6,6-4,6-4 |
| ITF M15 - Zilina | 2021/08/31 07:30 | Kristof Minarik v Radovan Michalik | 6-2,6-2 |
| ITF M15 - Bratislava | 2021/08/24 08:00 | Kristof Minarik v Obrad Markovski | 7-6,3-6,3-10 |
| ITF M15 - Bratislava | 2021/08/23 09:00 | Kristof Minarik v Simon Sedliak | 6-2,6-0 |
| ITF M15 - Doboj | 2021/07/14 08:30 | Gergely Madarasz v Kristof Minarik | 7-6,7-6 |
| ITF M15 - Doboj | 2021/07/13 08:00 | Kristof Minarik v Danilo Raicevic | 6-1,6-3 |
| ITF M15 - Doboj | 2021/07/11 12:30 | Kristof Minarik v Matija Zugic | 6-4,6-2 |
| ITF M15 - Poprad | 2021/07/07 11:35 | Kristof Minarik v Damien Wenger | 0-6,1-6 |
| ITF M15 - Poprad | 2021/07/05 08:00 | Samuel Puskar v Kristof Minarik | 6-3,7-6 |
| ITF M25 - Überlingen | 2021/08/18 14:10 | Milan Welte v Constantin Bittoun Kouzmine | 6-4,6-0 |
| ITF M15 - Cairo | 2021/08/05 09:20 | Lukas Krainer v Constantin Bittoun Kouzmine | 6-1,6-2 |
| ITF M15 - Cairo | 2021/08/04 07:30 | Gabriele Maria Noce v Constantin Bittoun Kouzmine | 0-6,6-3,4-6 |
| ITF M15 - Cairo | 2021/08/03 07:30 | Constantin Bittoun Kouzmine v Thiago Cigarran | 6-1,4-6,10-8 |
| ITF M15 - Cairo | 2021/08/02 08:30 | Constantin Bittoun Kouzmine v Tobias Franco | 6-2,6-0 |
| ITF M15 - Cairo | 2021/08/01 09:00 | Constantin Bittoun Kouzmine v Edoardo Zanada | 6-3,4-6,10-8 |
| ITF M15 - Cairo | 2021/07/26 08:00 | Constantin Bittoun Kouzmine v Samuele Pieri | 6-7,3-6 |
| ITF M15 - Cairo | 2021/07/25 08:00 | Constantin Bittoun Kouzmine v Ashraf El Sayed | 6-0,6-1 |