Stadion: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 - Doha | 2023/10/04 15:45 | Mashari Nawaf v Bogdan Bobrov | 5-7,4-6 |
| ITF - M25 - Doha | 2023/01/17 16:15 | Mashari Nawaf v Mukund Sasikumar | 0-6,1-6 |
| ITF - M15 - Doha | 2023/01/11 17:50 | Piotr Kusiewicz v Mashari Nawaf | 6-4,6-1 |
| ITF - M15 - Doha | 2021/12/29 14:35 | Mashari Nawaf v Bogdan Ionut Apostol | 1-6,4-6 |
| ITF - M15 - Doha - Qualifikation | 2021/12/19 13:40 | Mashari Nawaf v Shahbaaz Khan | 3-6,3-6 |
| ITF - M15 - Doha | 2021/12/13 13:25 | Mashari Nawaf v Nico Hornitschek | 0-6,2-6 |
| Davis Cup | 2021/09/16 08:45 | Nam Hoang Ly v Mashari Nawaf | 6-1,6-0 |
| ITF - M15 - Doha | 2023/10/06 12:55 | Coleman Wong v Olaf Pieczkowski | 7-6,6-3 |
| ITF - M15 - Doha | 2023/10/05 14:20 | Zach Stephens v Olaf Pieczkowski | 3-6,3-6 |
| ITF - M15 - Doha | 2023/10/04 18:10 | Grigoriy Lomakin v Olaf Pieczkowski | 3-6,4-6 |
| ITF - M25 - Falun | 2023/09/26 12:00 | Olaf Pieczkowski v Anton Matusevich | 7-6,3-6,4-6 |
| Davis Cup | 2023/09/15 14:35 | Olaf Pieczkowski v Darian King | 1-6,7-6,6-3 |
| ITF - M15 - Szczawno | 2023/09/03 09:30 | Olaf Pieczkowski v Jasza Szajrych | 6-1,6-2 |
| ITF - M15 - Szczawno | 2023/09/01 09:00 | Olaf Pieczkowski v Jonas P Hartenstein | 6-2,6-2 |
| ITF - M15 - Szczawno | 2023/08/30 07:00 | Olaf Pieczkowski v Alan Bojarski | 6-0,6-2 |