In addition to the two Önnereds teams, 42 other teams from 13 different countries played in Boys 11. They were divided into 7 different groups, whereof Önnereds HK 2 could be found in Group 7 together with SS Tushino Moscow, HK Ankaret 1, OV Helsingborg, Lugi HF 5, Torslanda HK 3 and Vorup FB. Önnereds HK 2 continued to B-Play-off after reaching 4:th place in Group 7. In the playoff they made it to 1/4 Final, but lost it against IF Stjernen 1 with 11-13. In the Final, IF Stjernen 1 won over Torslanda HK 1 and became the winner of B-Play-off in Boys 11. Önnereds HK also participated in Boys 10 during Partille Cup 2018. They reached the Semi final in B10 A-Play-off, but lost it against Lugi HF 2 with 10-14.