He played junior hockey for the Regina Abbotts in 1942-43. The following season he moved to Boston where he played for the Boston Olympics. In that season (1943-44) he was also called up to the Boston Bruins where he played in 19 games and scored 3 goals and 7 assists.
Rittinger played for the Olympics again in 1944-45 then played minor pro hockey for four seasons. In 1949 he joined the senior Kerrisdale Monarchs where he played for three seasons. He retired in 1952.
At right: Rittinger on a 1947 Oakland Oaks program cover.