Sergiusz Zając


Sergiusz Zając is a Polish professional mixed martial artist. He currently competes in the Light Heavyweight division of Konfrontacja Sztuk Walki.

Professional career

Early career

Zając made his professional debut on November 27, 2020 against Łukasz Olech. Zając lost the fight via a first-round submission.
After a year and a half away from the sport, he returned on February 19, 2022 against Paweł Całkowski. Zając won the fight via a third-round TKO.

Babilon MMA

Zając made his debut under Babilon MMA on July 8, 2022 against Łukasz Kulpa. Zając won the fight via a first-round TKO.

Carpathian Warriors

Zając made his debut under Carpathian Warriors on October 1, 2022 against Wincenty Krawczyk. Zając won the fight via a first-round TKO.

Return to Babilon MMA

Zając returned to Babilon MMA on September 22, 2023 against Dominik Owsiany. Zając won the fight via a first-round TKO.
His next fight came on January 27, 2024 against Bartłomiej Gładkowicz. Zając won the fight via a Unanimous Decision.
His last fight under the federation came on June 1, 2024 against Ramon Drum. Zając won the fight via a first-round TKO.

Konfrontacja Sztuk Walki

On August 15, 2024, it was announced that Zając had signed with Konfrontacja Sztuk Walki, and will be facing Kleber Raimundo Silva in his debut on August 24, 2024. The bout proceeded after Zając missed weight by 5.2 pounds. Despite missing weight, Zając won the fight via a first-round TKO.
His next fight came on March 8, 2025 against Michał Dreczkowski. Zając won the fight via a first-round TKO. This fight earned him his first Knockout of the Night bonus.
His next fight came on September 20, 2025 against debutant Mariusz Książkiewicz. Zając won the fight in the first round after Książkiewicz suffered a knee injury.

Championships and accomplishments

Mixed martial arts