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In addition to GIF Sundsvall, 134 other teams from 27 different countries played in Boys 18. They were divided into 33 different groups, whereof GIF Sundsvall could be found in Group 18 together with Torslanda IK 1, Ryan FC and IF Skarp. GIF Sundsvall continued to Play off A after reaching 2:nd place in Group 18. In the playoff they made it to 1/64 Final, but lost it against NorCal Premier PDP with 0-3. In the Final, Kharis Sports Academy won over Greengen FC and became the winner of Play off A in Boys 18. GIF Sundsvall also participated in Boys 18 during Gothia Cup 2018. They reached the 1/16 Final in B18 Play off A, but lost it against IFK Östersund with 1-2.