In addition to the two Rahlstedter, teams, 133 other teams from 27 different countries played in Boys 18. They were divided into 33 different groups, whereof Rahlstedter, SC 2 could be found in Group 24 together with Kharis Sports Academy, Strindheim IL, IFK Östersund and Sleipner, IK. Rahlstedter, SC 2 continued to Play off B after reaching 5:th place in Group 24. In the playoff they made it to 1/8 Final, but lost it against Sävedalens IF with 1-4. In the Final, Sävedalens IF won over Tidaholms GIF and became the winner of Play off B in Boys 18. Rahlstedter, SC also participated in Boys 18 during Gothia Cup 2018. They reached the 1/32 Final in B18 Play off B, but lost it against RC Lens London with 1-2.