Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Sharm El Sheikh | 2021/10/20 12:25 | Deviatiarov, Marat v Andrea Guerrieri | 6-4,6-0 |
| ITF - M15 Sharm El Sheikh | 2021/10/14 10:35 | Gabriel Decamps v Deviatiarov, Marat | 6-4,5-7,6-0 |
| ITF - M15 Sharm El Sheikh | 2021/10/13 09:35 | Alexandros Skorilas v Deviatiarov, Marat | 3-6,0-6 |
| ITF M15 Ulcinj | 2021/09/15 10:00 | Deviatiarov, Marat v Franco Emanuel Egea | 3-6,3-6 |
| ITF M15 Ulcinj | 2021/09/09 08:30 | Deviatiarov, Marat v Oleksandr Ovcharenko | 1-6,1-6 |
| ITF M15 Ulcinj | 2021/09/08 08:00 | Deviatiarov, Marat v Saito, Takashi | 6-3,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/15 08:00 | Andrey Chepelev v Deviatiarov, Marat | 6-1,6-7,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 08:00 | Fermin Tenti v Deviatiarov, Marat | 0-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/20 08:00 | Akram El Sallaly v Neil Oberleitner | 6-7,6-2,3-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/15 08:00 | Marek Gengel v Neil Oberleitner | 6-2,6-1 |
| ITF - M15 Sharm El Sheikh | 2021/10/14 08:00 | Neil Oberleitner v Lorenzo Bocchi | 3-6,6-1,7-6 |
| ITF - M15 Sharm El Sheikh | 2021/10/07 10:00 | Gabriel Decamps v Neil Oberleitner | 6-3,6-3 |
| ITF - M15 Sharm El Sheikh | 2021/10/06 13:40 | Neil Oberleitner v Saba Purtseladze | 7-5,7-6 |
| ITF M25 Pretoria | 2021/09/28 07:00 | Neil Oberleitner v Badenhorst, Devin | 6-4,4-6,7-10 |
| ITF M25 Pretoria | 2021/09/27 08:30 | Neil Oberleitner v Benjamin Scott | 6-2,6-0 |
| ITF M25 Johannesburg | 2021/09/22 08:30 | Daniel Cukierman v Neil Oberleitner | 6-2,6-3 |