Results
| Challenger Calgary | 11/06 01:00 | 14 | [419] Giles Hussey v Piotr Matuszewski [127] | 6-1,4-6,6-4 | |
| Challenger Shenzhen Qual | 10/15 07:35 | 19 | [445] Zhe Li v Piotr Matuszewski [135] | 6-3,6-2 | |
| ITF M25 Poznan | 08/21 13:20 | 44 | Piotr Matuszewski v Vojtech Vlkovsky | 7-6,1-6,8-10 | |
| ITF M25 Santa Margherita | 05/03 15:55 | 26 | [354] Sebastian Fanselow v Piotr Matuszewski [171] | 7-5,1-6,6-4 | |
| ITF M25 Santa Margherita | 05/01 11:10 | 25 | Piotr Matuszewski v Lorenzo Ferri | 3-6,6-2,6-0 | |
| ITF M25 Split | 04/18 08:00 | 62 | Piotr Mateuszewski v Maj Premzl | 5-7,2-6 | |
| Challenger Zadar | 03/19 13:10 | 45 | [177] Piotr Matuszewski v Mirza Basic [468] | 0-6,2-6 | |
| Challenger Guayaquil | 10/31 15:00 | 14 |
[205] Piotr Matuszewski v
Daniel Merida Aguilar
[482] 
|
4-6,4-6 | |
| Challenger Coquimbo | 10/16 15:45 | 14 | Fermin Tenti v Piotr Matuszewski | 6-4,6-2 | |
| Challenger Rio De Janeiro | 10/09 19:10 | 14 |
Giovanni M Perricard
v
Piotr Mateuszewski |
6-3,6-0 | |
| ITF M25 Poznan | 08/26 09:00 | 27 | Valerio Aboian v Piotr Matuszewski | Retired | |
| ITF M25 Poznan | 08/25 08:30 | 26 | [193] Piotr Matuszewski v Pawel Cias [445] | 3-6,6-2,7-6 |
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