RS Zagreb was one of 8 clubs from Croatia that had teams playing during Partille Cup 2019. They participated with two teams in Boys 15 and Boys 16 respectively. The team in Boys 15 made it to the the Semi final in A-Play-off, but lost it against Hörning Håndbold by 12-14.
In addition to this, RS Zagreb have participated in Partille Cup before. During Partille Cup 2018, RS Zagreb had one team playing in Boys 16. The team in Boys 16 made it to the the 1/16 Final in A-Play-off, but lost it against Tyresö Handboll by 8-11.
RS Zagreb comes from ZAGREB which lies approximately 1400 km from Göteborg, where Partille Cup takes place. The area around ZAGREB does also provide five additional clubs participating during Partille Cup 2019 (RK Zagreb, RK Tresnjevka, RK Rugvica, Rugvica, ZRK and RK Rudar).