| ITF M15 Sharm El Sheikh | 2025/04/01 08:00 | Ruslan Tiukaev v Sten Hiiesalu | 6-4,6-3 |
| UTR Pro Boca Raton | 2025/01/15 15:00 | Edward Wang v Piotr Siekanowicz | 4-6,6-3,1-6 |
| UTR Pro Boca Raton | 2025/01/14 15:00 | Kalman Boyd v Piotr Siekanowicz | 6-3,6-4 |
| UTR Pro Boca Raton | 2025/01/12 15:00 | Adrien Burdet v Piotr Siekanowicz | 7-5,6-2 |
| ITF M15 Tallahassee | 2024/11/21 14:50 | Piotr Siekanowicz v Tristan McCormick | 4-6,2-6 |
| ITF M15 Tallahassee | 2024/11/20 14:00 | Azariah Rusher v Piotr Siekanowicz | 2-6,6-7 |
| ITF M15 Ann Arbor | 2024/10/02 19:10 | Dan Martin v Piotr Siekanowicz | 6-2,4-6,6-4 |
| ITF M15 Ann Arbor | 2024/10/01 14:00 | Mitchell Sheldon v Piotr Siekanowicz | 3-6,0-6 |
| ITF M15 Ann Arbor | 2024/09/30 15:00 | Milos Mikovic v Piotr Siekanowicz | 4-6,1-6 |