Stadium: Court 1 Round: 44 Ground: Clay
| ITF M25 Trnava | 2023/03/28 09:45 | Dominik Recek v Piotr Kusiewicz | 6-4,6-3 |
| ITF M25 Trnava | 2023/03/27 13:00 | Lukas Janousek v Piotr Kusiewicz | 4-6,1-6 |
| ITF M15 Rovinj | 2023/03/12 09:00 | Obrad Markovski v Piotr Kusiewicz | 6-3,6-2 |
| ITF M15 Porec | 2023/03/05 11:30 | Tim Heger v Piotr Kusiewicz | 6-3,7-5 |
| ITF M25 Doha | 2023/01/15 15:05 | Arslanbek Aitkulov v Piotr Kusiewicz | 6-3,6-2 |
| ITF M15 Doha | 2023/01/12 13:20 | Piotr Kusiewicz v Yanki Erel | 1-6,0-6 |
| ITF M15 Doha | 2023/01/11 17:50 | Piotr Kusiewicz v Mashari Nawaf | 6-4,6-1 |
| ITF M15 Doha | 2023/01/10 13:15 | Piotr Kusiewicz v Parikshit Somani | 7-6,6-4 |
| ITF M15 Alaminos-Larnaca | 2023/04/24 07:00 | Alexander C Parker v Jiri Cizek | 6-7,6-7 |
| ITF M25 Manacor | 2023/01/09 14:30 | Alexander C Parker v Sergi Fita Juan | 3-6,7-5,2-10 |
| ITF M15 Parnu | 2022/10/24 09:30 | Leevi Saatela v Alexander C Parker | 5-7,7-5,10-5 |
| ITF Switzerland F1 Qual | 2017/02/05 11:30 | Alexander C Parker v Kirill Kivattsev | 3-6,0-6 |
| ITF Spain F38 | 2016/11/13 10:00 | Carlos Fernandez-Espinar v Alexander C Parker | 3-6,6-2,6-1 |
| ITF Spain F38 | 2016/11/12 11:30 | Alvaro Blanco Damea v Alexander C Parker | 1-6,6-2,3-6 |
| ITF Spain F36 | 2016/11/10 10:30 | Alexander C Parker v Ricardo Ojeda Lara | 1-6,0-6 |
| Others | 2016/11/07 09:00 | Alejandro Garcia Saez v Alexander C Parker | 3-6,3-6 |