Here is a list of Kołecki's best fights. For a list of Kołecki's losses, refer to "Szymon Kołecki Losses".
On March 23, 2019 Szymon Kołecki faced off against Mariusz Pudzianowski in a heavyweight bout at age 37. He was coming in with a record of 7-1 (7), and Pudzianowski was 42 years old and with a record of 12-6 (7). Kołecki stopped Mariusz Pudzianowski via TKO.
On December 7, 2019 Szymon Kołecki faced off against Damian Janikowski in a heavyweight bout at age 38. He was coming in with a record of 8-1 (8), and Janikowski was 30 years old and with a record of 4-2 (4). Kołecki stopped Damian Janikowski via TKO.
On July 17, 2021 Szymon Kołecki faced off against Akop Szostak in a heavyweight bout at age 39. He was coming in with a record of 10-1 (9). Kołecki stopped Akop Szostak via KO.
On January 30, 2021 Szymon Kołecki faced off against Martin Zawada in a heavyweight bout at age 39. He was coming in with a record of 9-1 (8). Kołecki won the fight via 3-round unanimous decision.
