The Florida State League of Minor League Baseball is a Single-A baseball league in the United States. The league was founded in 1919. A league champion is determined at the end of each season. Champions have been determined by postseason playoffs, winning the regular season pennant, or being declared champion by the league office. Off and on (1919–28, 1936–41, and 1946–68), the league recognized pennant winners and/or playoff winners as league champions. In 2019, the first-half and second-half winners in each division (North and South) competed in a best-of-three series to determine division champions. Then, the North and South division winners played a best-of-five series to determine a league champion.[1] Since 1979, the winner of the League Championship Series has become the holder—until the following season's championship—of the Watson Spoelstra Florida State League Championship Trophy.[2] As of 2022, the winners of each division from both the first and second halves of the season meet in a best-of-three division series, with the winners of the two division series meeting in a best-of-three championship series.[3]