Filipczak attended Northeastern High School in Detroit. There, he was recognised as a star basketball player and was twice selected to the all-city team.[5] He also played football and baseball at school, being awarded letters in all three sports.[3]
After leaving school, Filipczak worked for Ford Motor Company while continuing to play several sports competitively at an amateur level.[3] He had played basketball semi-professionally for seven years before being signed by the Detroit Eagles in 1940.[5]
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