Predecessor leagues (1885–1963) The original
Southern League was formed prior to the 1885 season as an eight-team circuit playing in the
Southern United States. It operated at various times as a
Class B league (equivalent to short-season Class A before 2021, and
Low-A since 2021). Fraught with financial problems, teams regularly dropped out before the season's end. After being nonoperational in 1891, 1892, and 1897, it disbanded permanently after halting play during the 1899 season. The
Southern Association was formed in 1901 as a Class B circuit operating in nearly the same footprint as the first Southern League. It was elevated to
Class A in 1902,
Class A1 in 1936, and
Double-A in 1946. A year after the Southern Association's disbandment, the SALLY League took its place at the Double-A level in 1963. With an odd number of teams, the Southern League joined forces with the Double-A
Texas League as the
Dixie Association in 1971. The two leagues played an interlocking schedule with individual league champions determined at the end of the season. Up to this point, the
Southern League pennant had simply gone to the team with the best record at the end of the regular season. For the first time, the top two Southern League teams met in a best-of-three series to determine champions. The Charlotte Hornets defeated the Asheville Tourists, 2–1, and then defeated the Texas League champion
Arkansas Travelers, 3–0, to win the Dixie Association championship. The partnership was dissolved after the season. In 1976, it introduced a split-season format with the schedule divided in half and first and second half champions from each division being crowned. This expanded the playoffs to two rounds with the winners of each half competing for each division's championship and those winners meeting for the league championship. With the addition of two teams in 1978, the Southern League grew to 10 teams.
COVID-19 impact and takeover by Major League Baseball (2020–present) The start of the 2020 season was postponed due to the
COVID-19 pandemic before ultimately being cancelled on June 30. As part of Major League Baseball's 2021 reorganization of the minor leagues, the Southern League was reduced to eight teams and temporarily renamed the "Double-A South" for the 2021 season. Following MLB's acquisition of the rights to the historical names of the minor leagues, the Double-A South was renamed the Southern League effective with the 2022 season. ==Current teams==