He won a bronze medal in super combined at the World Championships in 2009 at Val-d'Isère, France,[3] and is a member of SK Medveščak.

Born in Zagreb, SR Croatia, SFR Yugoslavia, Zrnčić-Dim's best World Cup result is second place in a super combined, achieved on 30 January 2011 in Chamonix, France.

[4] Zrnčić-Dim incurred shoulder injury in a super-G at Beaver Creek in early December 2012, which ended his 2013 season.

In 2019 he announced his retirement from active competing, due to unsuccessful comeback after injury in November 2016.

Since the start of 2019/20 season, he coaches Rea Hraski to prepare for the 2019 Winter Deaflympics.