High Quality Content by WIKIPEDIA articles! The Jacksonville Suns are a minor league baseball team based in Jacksonville, Florida. The team is currently a member of the Southern League and is the class Double-A affiliate of the Miami Marlins Major League Baseball (MLB) team. Two teams named the Suns have played in Jacksonville since 1962: a class Triple-A International League team from 1962–1968, and the current Double-A team from 1970 to the present. From 1985–1990 the team was known as the Jacksonville Expos, when they were affiliated with the Montreal Expos MLB team.