Joanna Jdrzejczyk was born in Olsztyn (Poland), 18th of August 1987. She's Polish MMA fighter. Joanna is the current UFC Women's Strawweight Champion. She started her career in martial arts in Muai Thai, where she won 6 World Champion and 4 European Champion titles.Joanna started her MMA career in Arrachion MMA Olsztyn, Poland. After 6 professional fights she joined UFC, the World's biggest MMA Organisation. Currently she fights out of American Top Team, Florida, USA.She became UFC Champion in March 2015, after hugely one sided fight with Carla Esparza. Since then, Joanna is undefeated, keeping her belt fighting with top female strawweight fighters: Jessica Penne, Valerie Letourneau, Claudia Gadelha, Karolina Kowalkiewicz and Jessica Andrade.Undoubtedly Number One pound-for-pound female MMA fighter. Number 7 in pound-for-pound UFC ranking.