A good-hitting catcher, Mana played in the Minnesota Twins farm system in 1969. He was with the Gulf Coast League Twins in Sarasota, Florida. Bert Blyleven was also on the team and Mana caught the games that Blyleven pitched. In 1966, Mana was an All-Metro third baseman for Augustinian Academy. His batting average was .410. His team finished second at the Missouri High School State Tournament. Mana was captain of his Augustinian team for three years. He was a catcher and third baseman for the Gardenville-Affton Post 300 team that won the American Legion city championship in 1966. From 1967 to 1969, Mana played for Washington University and was named an All-Conference Kraft played for Schnucks in the St. Louis Metro League in 1985. The following year, he was with the Decatur Blues in the Central Illinois Collegiate League. Catcher in 1969. He was team captain for two years. From 1968 to 1971, he was a catcher for L&P Sales in the Heine Meine Semi-Pro League. In 1970, his team won the Heine Meine city championship. In 1972, he caught for Kutis in the Heine Meine Semi-Pro League. He played in the CYC League for St. Catherine Catholic Church in 1975 and 1976. Mana coached varsity baseball at Augustinian Academy in 1971 and 1972. Those were the last two years the school was in existence. He secured funds to build a baseball field on the campus. He managed the baseball team at Assumption Catholic Church for ten years. He was also the manager of the softball, soccer, and basketball teams. He helped raise money to support the church’s athletic department. He managed the St. Louis Braves team at Heine Meine Field. For several years, Mana coached the baseball team at St. Andrew Catholic Church, winning one CYC city championship.