Stadium: Court 6 Round: 44 Ground: Clay
| ITF M15 Kaarst | 2019/02/04 08:30 | Mats Hermans v Piotr Matuszewski | 6-4,2-6,8-10 |
| ITF M25 Porto | 2019/07/24 15:30 | Rayane Roumane v Piotr Matuszewski | 6-7,7-6,6-1 |
| ITF M25 Porto | 2019/07/23 09:00 | Piotr Matuszewski v Romain Bauvy | 6-2,6-3 |
| ITF M25 Porto | 2019/07/22 13:30 | Piotr Matuszewski v Eduardo LDR De Almeida | 6-2,6-3 |
| ITF M15 Irpin | 2019/05/27 10:00 | Vladyslav Gorodynskyi v Piotr Matuszewski | 2-6,7-6,15-13 |
| ITF M15 Irpin | 2019/05/27 06:30 | Demian Hulyanich v Piotr Matuszewski | 3-6,2-6 |
| ITF M15 Tbilisi | 2019/05/01 11:00 | Piotr Matuszewski v Peter Bothwell | 7-6,1-6,4-6 |
| ITF M15 Tbilisi | 2019/04/30 06:00 | Piotr Matuszewski v Mikel Martinez | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2019/04/11 08:00 | Daniel Michalski v Piotr Matuszewski | 6-2,6-1 |
| ITF M15 Tabarka | 2019/07/25 08:00 | Benjamin Dhoe v Mats Hermans | 7-5,5-7,6-2 |
| ITF M15 Tabarka | 2019/07/24 09:25 | Mats Hermans v Ameur Ben Hassen | 6-1,6-0 |
| ITF M15 Tabarka | 2019/07/22 13:00 | Skander Ben Abdallah v Mats Hermans | 0-6,3-6 |
| ITF M15 Tabarka | 2019/07/22 07:30 | Egor Noskin v Mats Hermans | 2-6,6-4,7-10 |
| ITF M15 Tabarka | 2019/07/17 12:15 | Andrea Picchione v Mats Hermans | 6-3,3-6,6-3 |
| ITF M15 Tabarka | 2019/07/15 13:30 | Mats Hermans v Francesco Liucci | 6-2,7-6 |
| ITF M15 Tabarka | 2019/07/15 07:30 | Mats Hermans v Skander Ben Abdallah | 6-0,6-3 |
| ITF M15 Den Haag | 2019/07/03 13:35 | Mats Hermans v Igor Sijsling | 2-6,1-6 |