Stadium: Court 2 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Oslo | 2019/03/05 09:00 | Bart Stevens v Piotr Matuszewski | 2-6,6-1,10-8 |
| ITF M15 Oslo | 2019/03/04 09:00 | Piotr Matuszewski v Christoffer Solberg | 7-6,6-4 |
| ITF M15 Kaarst | 2019/02/06 13:15 | Piotr Matuszewski v Vadym Ursu | 6-7,0-6 |
| ITF M15 Kaarst | 2019/02/04 16:30 | Marco De Rossi v Piotr Matuszewski | 7-6,0-6,7-10 |
| ITF M15 Kaarst | 2019/02/04 08:30 | Mats Hermans v Piotr Matuszewski | 6-4,2-6,8-10 |
| ITF M15 Bagnoles-de-l'Orne | 2019/01/09 09:00 | Piotr Matuszewski v Hugo Voljacques | 4-6,5-7 |
| ITF M15 Bagnoles-de-l'Orne | 2019/01/07 15:50 | Quentin Gueydan v Piotr Matuszewski | 5-7,2-6 |
| ITF M15 Bagnoles-de-l'Orne | 2019/01/07 10:40 | Max Westphal v Piotr Matuszewski | 6-7,4-6 |
| ITF M15 Sharm El Sheikh | 2019/04/08 08:00 | Akim Zarichanskyy v Marius Ruzgas | 1-6,2-6 |
| ITF Germany F16 | 2018/10/21 08:00 | Marius Ruzgas v Tillmann Erdbories | 1-6,6-7 |
| ITF Sweden F5 | 2018/09/30 09:15 | Marius Ruzgas v Pak Long Yeung | 3-6,3-6 |
| ITF Sweden F5 | 2018/09/29 13:10 | Marius Ruzgas v Simon Yitbarek | 6-4,7-5 |
| ITF Sweden F4 | 2018/09/24 12:20 | Marius Ruzgas v Lucas Catarina | 6-7,2-6 |
| ITF Sweden F4 | 2018/09/23 11:45 | Marius Ruzgas v Simon Freund | 6-3,7-6 |
| ITF Latvia F1 | 2018/07/29 07:00 | Marius Ruzgas v Teodors Pukshe | 4-6,4-6 |
| ITF Lithuania F1 | 2018/07/22 08:00 | Christoffer Solberg v Marius Ruzgas | 6-4,6-1 |