In addition to IF FF Hammarby, 207 other teams from 37 different countries played in Boys 15. They were divided into 52 different groups, whereof IF FF Hammarby could be found in Group 27 together with FC Spilamberto, IFK Hässleholm and TSV Uesen. IF FF Hammarby continued to Play off A after reaching 1:st place in Group 27. In the playoff they made it to 1/64 Final, but lost it against VFL Bückeburg with 0-2. In the Final, J-L Juniors won over TSV Havelse and became the winner of Play off A in Boys 15. IF FF Hammarby also participated in Boys 14 during Gothia Cup 2013. They reached the 1/32 Final in B14 Play off A, but lost it against Dallas Texans with 0-1.