About Mladen Košćak
Mladen Košćak was a Croatian and Yugoslav footballer. Košćak soon established himself as a first-team regular and was instrumental in Dinamo's 1957–58 Yugoslav First League title. Internationally, he was capped 4 times for the Yugoslavia national football team and was member of the national squad which won the silver medal at the 1956 Summer Olympics in Melbourne.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.