In addition to the two Zagreb teams, 83 other teams from 20 different countries played in Boys 13. They were divided into 14 different groups, whereof RK Zagreb 2 could be found in Group 11 together with Bangla Club, Ski IL 1, IK Sävehof 1, Lugi HF 2 and Waasmunster HK. RK Zagreb 2 made it to A-Play-off after reaching 1:st place in Group 11. Once in the playoff they won every match inluding the Final against Önnereds HK 1, which they won with 17-7. Thereby RK Zagreb 2 won the entire A-Play-off in Boys 13 during Partille Cup 2013.