RK Zagreb

In addition to RK Zagreb, 113 other teams from 19 different countries played in Boys 16. They were divided into 18 different groups, whereof RK Zagreb could be found in Group 14 together with IFK Ystad, Skånela IF, MTV Dänischenhagen, Hörning Håndbold, Elverum Håndball 1 and Herkules. RK Zagreb continued to A-Play-off after reaching 3:rd place in Group 14. In the playoff they made it to 1/32 Final, but lost it against HEI Håndbold 2 with 12-18. In the Final, HEI Håndbold 1 won over Team Niedersachsen and became the winner of A-Play-off in Boys 16. RK Zagreb also participated in Boys 15 during Partille Cup 2023. They reached the 1/8 Final in B15 A-Play-off, but lost it against Torslanda HK 1 with 18-19.