Stadium: Court 6 Round: 62 Ground: Clay
| 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 USA F32 | 2018/11/15 16:00 | Alex Knaff v Ricardo Rodriguez-Pace | 2-6,2-6 |
| ITF M15 Novi Sad | 2021/07/25 10:45 | Tomislav Jotovski v Luka Petrovic | 7-6,6-2 |
| ITF M15 Doboj | 2021/07/13 10:00 | Tomislav Jotovski v Oleksandr Ovcharenko | 3-6,0-6 |
| ITF M15 Sofia | 2021/07/04 09:00 | Stefan Micov v Tomislav Jotovski | 4-6,2-6 |
| ITF M15 Skopje | 2021/06/09 12:30 | Simone Roncalli v Tomislav Jotovski | 6-0,6-3 |
| ITF M15 Skopje | 2021/06/02 11:45 | Tomislav Jotovski v Martin Damm | 6-7,4-6 |
| ITF M15 Brcko | 2021/05/21 11:30 | Remy Bertola v Tomislav Jotovski | 6-2,6-4 |
| ITF M15 Brcko | 2021/05/21 08:35 | Tomislav Jotovski v Aleksa Markovic | 6-1,6-2 |
| ITF M15 Prijedor | 2021/05/13 09:50 | Tomislav Jotovski v Aleksandar Tomas | 3-6,2-6 |