In addition to Sollentuna FK, 115 other teams from 30 different countries played in Boys 18. They were divided into 28 different groups, whereof Sollentuna FK could be found in Group 8 together with Strikers FC, MTV Treubund Lüneburg, V. Frölunda IF and AS Poissy. Sollentuna FK continued to Play off B after reaching 5:th place in Group 8. In the playoff they made it to 1/32 Final, but lost it against Academy of Baghdad with 1-2. In the Final, Kinetic Academy 1 won over F.C. Beirut 2 and became the winner of Play off B in Boys 18. Sollentuna FK also participated in Boys 18 during Gothia Cup 2013. They reached the 1/16 Final in B18 Play off B, but lost it against IFK Eskilstuna 2 with 1-2.