澳大利亞布裏斯班甲級聯賽

The first edition of a second tier league in the Brisbane soccer competition to be widely reported was the newly formed Division 2 in 1921. Seven clubs contested the Division 2 championship in 1921: Blackstone Rovers, Queens Park, Kangaroo Rats, Western Suburbs, Toowong, Bulimba Rangers and Kedron United. Blackstone Rovers, an Ipswich-based club, won the Division 2 premiership after beating Queens Park 1–0 in a play-off after the clubs finished level on points at the end of the regular season.

A second division of the Brisbane soccer competition has been contested continuously since 1921 with the exception of the early 1930s when the Ipswich clubs broke away from the Brisbane competition to form their own league, and during World War 2. When the top clubs split away to form the Queensland Soccer Federation in 1962, enough clubs joined the new body to form a Division One under the new State League. The QSF absorbed the former Brisbane & Ipswich District Football Association clubs in 1964 and the top two divisions were renamed back to Division One and Two in 1965. Since the formation of the Brisbane Premier League in 1983, the Brisbane soccer competition structure has been altered several times. Second tier divisions in the Brisbane competition have been:

• Division 2 (1921 to 1961)
• QSF Division 1 (1962 to 1964)
• Division 2 (1965 to 1982)
• Division 1 (1983)
• Intermediate League (1984 to 1986)
• Division 2 (1987 to 1996)
• Semi-Pro Division (1997 to 2001) – in North and South sections from 1997 to 2000
• Division 1 (2002)
• Premier Division 1 (2003 to 2012)
• Capital League 1 (2013 to present).

From 2003 to 2012 the tier below the Brisbane Premier League was known as Premier Division 1. It operated as a twelve team competition from 2004 to 2009, then expanded to fourteen teams for season 2010, to accommodate clubs returning to the BPL from the now defunct Queensland State League.

Since being renamed Capital League 1 in 2013 in which the competition has returned to a 12 team format.