Michał Antuszewicz was born in Harbin, China in 1909, as his father settled there after the Russo-Japanese War to work on the railways. As an ice hockey player Antuszewicz represented Manchuria in 12 matches before his family returned to Poland in 1949. He then played for Włókniarz Zgierz before moving to Legia Warsaw where he won the Polish championship in 1951 and 1952. Despite being in his early 40s he also represented the Polish national team in 14 matches, including competing at the 1952 Oslo Olympics. Following his playing career Antuszewicz became a coach and later worked as an interpreter for the Polish team at the 1964 Tokyo Olympics.