Stadium: Court 5 Round: 54 Ground: Hardcourt indoor
| ITF M15 Novi Sad | 2021/07/27 09:05 | Alex Knaff v Bekkhan Atlangeriev | 4-6,2-6 |
| 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 M15 Monastir | 2021/07/26 08:00 | Alec Deckers v Matthew Dellavedova | 7-5,2-6,10-7 |
| ITF M15 Monastir | 2021/07/20 10:10 | Mehdi Sadaoui v Matthew Dellavedova | 7-5,7-5 |
| ITF M15 Monastir | 2021/07/19 13:00 | Jacob Brumm v Matthew Dellavedova | 6-2,6-4 |
| ITF M25 Idanha-A-Nova | 2021/07/11 08:00 | Matthew Dellavedova v Goncalo Falcao | 4-6,4-6 |
| ITF M15 Almada | 2021/07/05 11:30 | Kuzey Cekirge v Matthew Dellavedova | 6-3,6-3 |
| ITF M15 Almada | 2021/07/04 08:30 | Simao Alves v Matthew Dellavedova | 2-6,5-7 |
| ITF M15 Heraklion | 2021/06/07 07:30 | Matthew Dellavedova v Yaron Guberman | 4-6,4-6 |
| ITF M15 Heraklion | 2021/06/06 09:00 | Nicolas Rafael Goldberg Alviani v Matthew Dellavedova | 2-6,0-6 |