professional record is 27–3. Mixed martial arts Early career Jędrzejczyk made her professional debut in mixed martial arts (MMA) on May 19, 2012, at SFT - MMA Fight Night Diva SPA against Sylwia Juskiewicz, winning via unanimous decision. On December 8, 2012, at MFC 5 she defeated Lily Kazak by submission via rear naked choke. On June 20, 2013, at Battle of Moscow 12 she defeated the then #1 Russian WMMA flyweight fighter Julia Berezikova via unanimous decision. By July 2013, Jędrzejczyk was the #7 women's flyweight fighter in the world by Fight Matrix. On June 7, 2014, at Cage Warriors Fighting Championship 69 she defeated Rosi Sexton via knockout in the second round. Ultimate Fighting Championship Jędrzejczyk officially signed with the Ultimate Fighting Championship (UFC) in July 2014. She made her promotional debut, now fighting as a strawweight, on July 26, 2014, at UFC on Fox: Lawler vs. Brown against Juliana Lima. She won the fight via unanimous decision. Jędrzejczyk next faced undefeated strawweight top contender Cláudia Gadelha on December 13, 2014, at UFC on Fox 13. She won the fight via split decision. The judges' decision was met with much controversy as the majority of the MMA media scored the bout in favor of Gadelha. Strawweight Champion Jędrzejczyk faced Carla Esparza for the UFC Strawweight Championship on March 14, 2015, at UFC 185. Jędrzejczyk won the one-sided bout via TKO in the second round, becoming the first UFC title-holder from Poland and first female European UFC champion. Subsequently, Jędrzejczyk won a Performance of the Night bonus. Jędrzejczyk's first title defense was against Jessica Penne on June 20, 2015, at UFC Fight Night: Jędrzejczyk vs. Penne in Berlin, Germany. She successfully defended the title against Penne, defeating her in the third round via TKO following a flurry of punches and a knee against the cage. Both participants were awarded Fight of the Night honors. Jędrzejczyk later underwent surgery to repair a fractured thumb incurred during the fight. In her second title defense, Jędrzejczyk faced Valérie Létourneau on November 15, 2015, in the co-main event at UFC 193. She won the fight by unanimous decision to retain her title. The 220 significant strikes landed by Jędrzejczyk were the most ever in a championship fight. 70 leg kicks were landed by Jędrzejczyk, the most in UFC history. The previous record was 68, set by Carlos Condit against Nick Diaz at UFC