Stadium: Court 6 Round: 62 Ground: Clay
| ITF M15 Novi Sad | 2021/07/26 12:00 | Alex Knaff v Tomislav Jotovski | 5-7,6-2,11-9 |
| ITF M15 Novi Sad | 2021/07/25 10:45 | Luka Pavlovic v Alex Knaff | 6-7,7-5,13-15 |
| ITF M15 Esch/Alzette | 2021/07/20 15:45 | Marlon Vankan v Alex Knaff | 6-4,6-4 |
| Davis Cup | 2021/06/18 10:30 | Valentin Vacherot v Alex Knaff | 6-2,6-3 |
| Davis Cup | 2021/06/16 09:50 | Alex Knaff v Simon Carr | 3-6,2-6 |
| ITF M15 Tallahassee | 2019/12/04 20:55 | Alex Knaff v Jason Kros | 6-1,3-6,6-7 |
| ITF M15 Tabarka | 2019/05/20 13:00 | Alex Knaff v Mauro De Maio | 6-7,6-2,8-10 |
| ITF USA F35 | 2018/12/03 15:00 | Paul Oosterbaan v Alex Knaff | 7-6,6-4 |
| ITF M15 Novi Sad | 2021/07/26 12:00 | Nikolas Lahky v Bekkhan Atlangeriev | 3-6,2-6 |
| ITF M25 Idanha-A-Nova | 2021/07/12 11:35 | Daniel Little v Bekkhan Atlangeriev | 6-2,4-6,10-2 |
| ITF M25 Idanha-A-Nova | 2021/07/11 10:30 | Andre Rodeia v Bekkhan Atlangeriev | 6-7,6-7 |
| ITF M15 Sofia | 2021/07/04 06:30 | Mihnea L.S. Turcu v Bekkhan Atlangeriev | 6-1,6-4 |
| ITF M25 Belgrade | 2021/06/28 07:00 | Viktor Jovic v Bekkhan Atlangeriev | 6-4,6-4 |
| ITF M15 Helsinki | 2021/06/01 07:00 | Bekkhan Atlangeriev v Karl Kiur Saar | 2-6,6-2,9-11 |
| ITF M15 Kouvola | 2021/05/26 06:00 | Anton Matusevich v Bekkhan Atlangeriev | 6-2,6-3 |
| ITF M15 St Petersburg Qual | 2021/02/07 13:55 | Evgeny Philippov v Bekkhan Atlangeriev | 6-3,6-3 |