Career
Kapetanović started his playing career with Građanski. After the club was disbanded in 1945 he was one of several Građanski players who went on to join the Belgrade-based FK Partizan, along with Franjo Glaser, Zlatko Čajkovski, Stjepan Bobek, Miroslav Brozović and others He also played for NK Lokomotiva, Dinamo Zagreb and Metalac.
As manager, he coached Dinamo Zagreb in 1973, and several Croat clubs abroad, such as Toronto Metros-Croatia in Canada and Croatia Sydney in Australia.