Ozawa was born in Utsunomiya on December 25, 1932. After graduating from Tokyo University of Education, he joined Toyo Industries in 1955. In 1962, he was selected "Japanese Footballer of the Year awards". In 1965, Toyo Industries joined new league Japan Soccer League. He retired in 1967. He played 42 games and the club also won the championship for 3 years in a row (1965-1967) in the league.