Here is a list of Masternak's best fights. For a list of Masternak's losses, refer to "Mateusz Masternak Losses".
On May 30, 2021 Mateusz Masternak faced off against Adam Balski in a cruiserweight bout at age 34. He was coming in with a record of 44-5 (29), and Balski was 30 years old and with a record of 15-0 (9). Masternak won the fight via 10-round unanimous decision.
On December 5, 2014 Mateusz Masternak faced off against Jean-Marc Mormeck at age 27. He was coming in with a record of 34-2 (24), and Mormeck was 42 years old and with a record of 37-5 (23). Masternak won the fight via 10-round majority decision.
On September 5, 2015 Mateusz Masternak faced off against Carlos Ailton Nascimento in a cruiserweight bout at age 28. He was coming in with a record of 36-3 (26). Masternak stopped Carlos Ailton Nascimento via TKO.
