Career
Gucmirtl first started playing for his hometown club NK Osijek before coming to Croatian powerhouse Dinamo Zagreb in 1965. Gucmirtl played as a striker for Dinamo throughout the remainder of his career, appearing in a total of 409 matches and scoring 109 goals for the Blues (including 191 appearances and 54 goals in the Yugoslav First League). He debuted for Dinamo on 7 February 1965 in an Eternal Derby game against Hajduk Split at Maksimir, and his last match for Dinamo was on 25 June 1973 against Red Star Belgrade.