1908:    NSWRL Competition begins with Glebe, Souths, Newtown, Easts, Norths, Balmain,              Wests, Newcastle.

1908:    Cumberland added in second round (eight team competition).

1908:    Cumberland exits at close of season.

1909:    Eight team Premiership.

            Newcastle exit at end of the season.

1910:    Annandale joins the Premiership (8 team competition).

1920:    Sydney University added (9 team competition).

            Annandale exit at end of season.

1921:    St George enters competition (9 team competition).

1929:    Glebe exits at the end of the season.

1930:    Eight team competition.

1935:    Canterbury joins competition (9 team competition).

1937:    University exit at end of the season.

1938:    Eight team competition.

1947:    Manly and Parramatta join the competition (10 teams).

1967:    Cronulla and Penrith join the competition (12 teams).

1982:    Canberra and Illawarra join the competition (14 teams).

1983:    Newtown exit at the end of the season.

1984:    13 team competition.

1988:    Brisbane, Newcastle and Gold Coast Giants join the competition (16 Teams).

1989:    Gold Coast becomes the Gold Coast Seagulls.

1995:    Auckland, North Queensland, South Queensland Crushers and Western Reds added             (20 team competition).

            August: Gold Coast withdraws. 

            December: Jeff Muller rescues Gold Coast (20 team competition).

1996:    March: ARL takes control as Gold Coast Chargers.

1997:    Adelaide Rams, Hunter Mariners join 10 team Super League, ARL runs 12 teams.

            Reds, Mariners, Crushers exit at end of season.

1998:    Melbourne added  (20 team competition).

            Adelaide, Gold Coast, exit at end of the season; St George and Illawarra merge.

1999:    St George Illawarra join (16 team competition).

            Norths, Souths exit at end of season. Balmain, Wests merge, Manly then merges with             Norths.

2000:    Wests Tigers, Northern Eagles join (14 team competition).

            October Auckland Warriors become New Zealand Warriors under Eric Watson.

2001:    August, Manly takes control of Northern Eagles Licence

2002:    Souths readmitted (15 team competition).

            May 25, Northern Eagles play last match in Gosford

            September, Northern Eagles exit competition

2003:    Manly Sea Eagles re-enter Premiership in their own right (15 team competition).

2007:    Gold Coast readmitted (16 team competition).