He played junior hockey with the Verdun Lasalles, St Jerome Aigles, Quebec Citadelles, and the Quebec Frontenacs from 1950 to 1955. While still a junior, he was called up by the Montreal Canadiens for two games in 1954-55 and scored an assist. He turned pro in 1955-56 with the Montreal Royals and played two more games with the Canadiens in 1956-57, scoring no more points. Rousseau played in the American Hockey League from 1958 to 1965. From 1965 to 1969 Rousseau played in the Quebec Provincial Senior Hockey League. In 1969 he was suspended for life for assaulting a referee.