Samuel Wilson Breadon was an American professional baseball executive. He served as the president and principal owner of the St. Louis Cardinals of Major League Baseball (MLB) from 1920 to 1947. During that time, the Cardinals rose from languishing as one of the National League's doormats to a premier power in baseball, winning nine NL pennants and six World Series championships. Breadon's teams also established the highest regular season winning percentage of any owner in franchise history at .570. His teams totaled 2,470 wins and 1,830 losses.