Gene Conley.Who was part of an NBA Championship team in the same year in which he was an All Star twice in MLB's National League?
Conley played Major League Baseball in 1952 and 1954-63 and in the NBA in 1952-53, 1958 - 61 and 1962-64. In 1959, Conley was a member of the NBA Champion Boston Celtics, and was named to both 1959 Baseball All-Star games, as a member of the Philadelphia Phillies.
Conley was also a member of the 1957 World Series Championship Milwaukee Braves team, and he is the only person to win championships in two of the four major American sports .