Stadium: MTA 12 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/10/10 07:00 | Simon Sedliak v Hasan Ibrahim | 1-6,2-6 |
| ITF M25 Budapest | 2021/09/26 07:00 | Simon Sedliak v Eric Morris | 1-6,6-3,4-10 |
| ITF M15 Zilina | 2021/08/30 07:30 | Paul Valsecchi v Simon Sedliak | 7-5,7-5 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Kristof Minarik v Simon Sedliak | 6-2,6-0 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 11:05 | Piotr Matuszewski v Simon Sedliak | 2-6,6-4,10-4 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 13:55 | Simon Sedliak v Peter Samosi | 6-2,7-5 |
| ITF M15 Poprád | 2021/07/04 11:00 | Dominik Palan v Simon Sedliak | 6-3,6-1 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Aleksandr Braynin v Simon Sedliak | 7-6,6-1 |
| ITF M15 Antalya | 2021/06/27 06:30 | Mert Arabaci v Zakhar Trapeznikov | 3-6,1-6 |
| ITF M15 Antalya | 2021/05/16 07:00 | Mert Arabaci v Bastien Presuhn | 2-6,3-6 |
| ITF M15 Antalya | 2021/05/02 06:00 | Lukas Palovic v Mert Arabaci | 6-1,6-1 |
| ITF M15 Antalya | 2021/04/27 10:40 | Sandro Ehrat v Mert Arabaci | 6-0,6-1 |
| ITF M15 Antalya | 2021/04/27 10:00 | Sandro Ehrat v Mert Arabaci | 6-0,5-1 |
| ITF M15 Antalya | 2021/04/04 06:30 | Mert Arabaci v Edoardo Graziani | 1-6,0-6 |
| ITF M15 Antalya | 2021/03/29 07:00 | Mert Arabaci v Deney Wassermann | 1-6,1-6 |
| ITF M15 Antalya | 2021/03/08 09:00 | Mert Arabaci v Obrad Markovski | 1-6,1-6 |