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In addition to IK Zenith, 110 other teams from 14 different countries played in Girls 15. They were divided into 27 different groups, whereof IK Zenith could be found in Group 16 together with Stuvsta IF, Merilappi United and Selånger FK. IK Zenith continued to Play off B after reaching 3:rd place in Group 16. In the playoff they made it to 1/4 Final, but lost it against IFK Göteborg with 1-6. In the Final, IFK Göteborg won over Sundsvalls DFF and became the winner of Play off B in Girls 15. IK Zenith also participated in Girls 14 during Gothia Cup 2018. They reached the 1/16 Final in G14 Play off A, but lost it against FH 1 with 0-1.