Hadžiabdić is the only person in Željezničar history to have won league titles both as a player and as a manager.
[1] Hadžiabdić started playing football in the youth teams of Iskra Bugojno and Bratstvo Travnik, before signing his first professional contract with Željezničar in 1965.
In 1974, Hadžiabdić signed with Belgian side Charleroi where he stayed for three seasons.
[2] Hadžiabdić was one of the best European defenders in the early 1970s and he made his debut for Yugoslavia in an April 1970 friendly match against Austria and has earned a total of 11 caps, scoring no goals.
In the winter of 1999, Hadžiabdić stepped down because of disappointing league results, despite winning the Bosnian Supercup in 1998 against the club's biggest rivals - Sarajevo.