Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Doha | 2023/10/10 12:00 | Sami Ben Abdennibi v Stefan Vujic | 6-7,7-6,3-6 |
| ITF M15 Doha | 2023/10/09 12:00 | Stefan Vujic v Ammar Elamin | 6-2,7-6 |
| ITF M15 Doha Qual | 2023/10/08 14:05 | Stefan Vujic v Ghanim Al Sulaiti | 6-0,6-1 |
| ITF M15 Doha | 2023/10/04 17:35 | Boris Pokotilov v Stefan Vujic | 6-4,6-2 |
| ITF M15 Doha | 2023/10/03 15:05 | Stefan Vujic v Linus Videhult | 6-7,3-6 |
| ITF M15 Kursumlijska Banja | 2023/08/30 10:30 | Gorazd Srbljak v Stefan Vujic | 6-4,3-6,6-3 |
| ITF M15 Kursumlijska Banja | 2023/08/29 08:50 | Stefan Vujic v Sami Ben Abdennibi | 6-3,6-2 |
| ITF M15 Kursumlijska Banja | 2023/08/28 09:30 | Stefan Vujic v Aleksandar Mihailovic | 6-1,4-6,10-3 |
| ITF M15 Doha | 2023/10/09 15:10 | Mashari Nawaf v Olaf Pieczkowski | 1-6,1-6 |
| 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 |