Scottish First Division
The First Division was introduced in 1975–76 to replace the old Scottish Football League Division Two, as the top flight of the Scottish Football League was renamed from Division One to Premier Division. In 1998, the Premier Division clubs broke away from the Scottish Football League to form the Scottish Premier League. The First Division remained the second tier of the Scottish league system, but was now the top tier of the Scottish Football League. In July 2013, the Scottish Football League and Scottish Premier League merged to form the Scottish Professional Football League (SPFL). The SPFL named its second tier as the Scottish Championship, which effectively replaced the First Division.