| ITF M25 Poznan | 2024/08/21 14:40 | Alec Beckley v Piotr Siekanowicz | 6-1,6-1 |
| 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 |
| ITF M25 Kursumlijska Banja | 2025/05/08 07:00 | Matthew Dellavedova v Alec Beckley | 7-5,6-2 |
| ITF M25 Kursumlijska Banja | 2025/05/06 09:00 | Dusan Obradovic v Alec Beckley | 3-6,3-6 |
| ITF M15 Kursumlijska Banja | 2025/05/01 08:30 | Ognjen Milic v Alec Beckley | 6-3,6-0 |
| ITF M15 Kursumlijska Banja | 2025/04/30 07:00 | Nikola Djosic v Alec Beckley | 6-3,3-6,2-5 |
| ITF M15 Kursumlijska Banja | 2025/04/23 07:00 | Alec Beckley v Semen Pankin | 1-6,0-5 |
| ITF M25 Tarragona | 2025/03/26 10:30 | Alec Beckley v Alex Molcan | 7-6,5-7,0-6 |
| ITF M25 Tarragona | 2025/03/25 10:30 | Alec Beckley v Luis Garcia Paez | 6-1,6-4 |
| ITF M25 Badalona | 2025/03/22 09:00 | Alec Beckley v Oriol Roca Batalla | 1-6,2-6 |