Stadium: Hard 20 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2023/11/20 07:00 | Winters, Brett v Gabriel Matuszewski | 7-5,2-6,5-10 |
| ITF M25 Heraklion | 2023/11/12 09:00 | Lalami Laaroussi, Younes v Gabriel Matuszewski | 6-4,6-0 |
| ITF M25 Heraklion | 2023/11/05 11:00 | Gabriel Matuszewski v Mattia Ricci | 4-6,4-6 |
| ITF M25 Heraklion | 2023/10/30 09:30 | Guy Den Heijer v Gabriel Matuszewski | 6-1,6-4 |
| ITF M25 Heraklion | 2023/10/29 10:30 | Gianluca Carlini v Gabriel Matuszewski | 6-7,1-6 |
| ITF - M15 Héraklion | 2023/10/22 08:30 | Gabriel Matuszewski v Cizelj-Zivkovic, Stefan | 4-6,4-6 |
| ITF - M15 Héraklion | 2023/10/17 06:30 | Ioannis Kountourakis v Gabriel Matuszewski | 6-3,6-0 |
| ITF - M15 Héraklion | 2023/10/16 09:00 | Gianluca Carlini v Gabriel Matuszewski | 6-4,1-6,5-10 |
| ITF - M15 Héraklion | 2023/11/20 07:00 | Timo De Visser v Julian Desousa | 6-2,4-6,5-10 |
| ITF M15 Al Zahra | 2023/10/31 08:25 | Dimic, Matic v Julian Desousa | 6-3,6-4 |
| ITF M15 Al Zahra | 2023/10/30 09:00 | Gimla, Pierre v Julian Desousa | 0-6,0-6 |
| ITF M15 Al Zahra | 2023/10/25 07:00 | Goncalo Oliveira v Julian Desousa | 6-1,6-2 |
| ITF M15 Al Zahra | 2023/10/24 08:35 | Julian Desousa v Mykyta Riepkin | 6-4,6-3 |
| ITF M25 Kigali | 2023/09/14 10:20 | Julian Desousa v Guy Orly Iradukunda | 1-6,2-6 |
| ITF M25 Kigali | 2023/09/13 09:40 | Julian Desousa v Mattias Southcombe | 6-3,6-2 |
| ITF M25 Kigali Qual | 2023/09/11 09:00 | Julian Desousa v Agarwal, Anurag | 7-6,6-1 |