Cezary Oleksiejczuk has three losses against three opponents on his MMA record. For a list of Oleksiejczuk's best fights, refer to "Best fights of Cezary Oleksiejczuk".
On December 13, 2023 Cezary Oleksiejczuk faced off against Alibeg Rasulov in a welterweight bout at age 23. He was coming in with a record of 12-3 (7). Oleksiejczuk lost the fight via 3-round unanimous decision.
On April 13, 2019 Cezary Oleksiejczuk faced off against Jacek Jędraszczyk in a welterweight bout at age 19. He was coming in with a record of 3-2 (2). Oleksiejczuk lost the fight via 3-round unanimous decision.
On October 20, 2018 Cezary Oleksiejczuk faced off against Kamil Dołgowski in a welterweight bout at age 18. He was coming in with a record of 2-1 (2). Oleksiejczuk lost the fight via 1st-round submission.
