Stadium: Court 5 Round: 44 Ground: Clay
| ITF M25 Most | 2021/05/23 15:00 | Antonin Stepanek v Antonin Bolardt | 2-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/18 07:30 | Titouan Droguet v Antonin Stepanek | 6-3,6-2 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 07:30 | Daniel Paty v Antonin Stepanek | 2-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 07:30 | Adam Januska v Antonin Stepanek | 1-6,2-6 |
| ITF M25 Prague | 2021/05/09 12:30 | Antonin Stepanek v Yann Wojcik | 6-4,4-6,4-10 |
| ITF M15 Milovice | 2019/11/13 12:50 | Robin Stanek v Antonin Stepanek | 4-6,6-2,6-4 |
| ITF M15 Milovice | 2019/11/12 09:00 | Egor Novikov v Antonin Stepanek | 2-6,4-6 |
| ITF M15 Milovice | 2019/11/11 11:00 | Kristian Kubik v Antonin Stepanek | 1-6,0-6 |
| ITF M15 Antalya | 2021/06/20 07:00 | Ivan Kazakov v Ray Ho | 2-6,1-6 |
| ITF M15 Tbilisi | 2021/05/18 05:30 | Aleksandr Braynin v Ivan Kazakov | 6-2,6-2 |
| ITF M15 Tbilisi | 2021/05/17 05:30 | Ivan Kazakov v Roman Nashatyrkin | 6-1,6-1 |
| ITF M15 Tbilisi | 2021/05/16 06:00 | Egor Baklanov v Ivan Kazakov | 6-7,6-3,1-10 |
| ITF M15 Antalya | 2021/04/18 07:00 | Leopold Zima v Ivan Kazakov | 6-0,6-3 |
| ITF M25 La Nucia | 2021/03/14 08:00 | Ivan Kazakov v Diego A B Sanchez | 0-6,1-6 |