 In October 2011, Stockholm became an apprentice member of the Women's Flat Track Derby Association, and it graduated to full membership in December 2012.Seven of Stockholm's skaters were selected to play for Team Sweden at the 2011 Roller Derby World Cup.At the first European WFTDA tournament in November 2012, "Track Queens Battle Royal", Stockholm came at third place out of ten bouting teams, defending their ingoing ranking for the tournament.