Cezary Oleksiejczuk

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Fighter bio

Cezary Oleksiejczuk – General Profile

Cezary Oleksiejczuk is a Polish professional mixed martial artist competing in the UFC’s middleweight division. Born on January 6, 2000, in Włodawa, Poland, Oleksiejczuk is known for his striking power, finishing instincts, and well-rounded MMA skill set. He represents a growing wave of Eastern European fighters making an impact on the global stage.

MMA Career

Oleksiejczuk began his professional mixed martial arts career in 2018, quickly building a strong record on the regional circuit with a combination of knockouts and decision victories. He became the Fight Exclusive Night (FEN) welterweight champion, defending the title multiple times before transitioning back toward middleweight competition. In September 2025, he earned a UFC contract by stopping Theo Haig via first-round knockout on Dana White’s Contender Series. Oleksiejczuk made his UFC debut on December 13, 2025, against César Almeida, winning by unanimous decision and showcasing his ability to compete at the highest level of the sport.

Fighting Style

Oleksiejczuk is a powerful and versatile fighter whose style blends aggressive striking with efficient grappling transitions. Standing approximately 6′3″ with a reach around 75.5″, he uses boxing combinations, heavy leg kicks, and pressure to control exchanges. He has shown the ability to score knockouts and secure submissions, making him dangerous in both stand-up and ground situations. His physical strength and competitive instincts keep opponents honest at all ranges.

Recent Developments

In his first UFC appearance at UFC Vegas 112, Oleksiejczuk delivered a strong performance against César Almeida, earning a unanimous decision win. Before that, he had amassed multiple stoppages on the regional scene and maintained a solid finish rate throughout his career. As a young and developing middleweight, he continues to gain experience against high-level competition, positioning himself as an exciting emerging fighter in the division.

Personal Life

Outside the Octagon, Oleksiejczuk comes from a combat sports family — his older brother, Michał Oleksiejczuk, also competes in the UFC. Cezary trains with The Fighting Nerds and has spent time preparing in Brazil alongside high-level training partners to broaden his skill set. Known for his calm demeanor and disciplined training ethic, he continues to evolve his approach as he pursues success in the UFC middleweight division.