The AGC South Pacific Championship was organised by the New South Wales Rugby Union on an invitational basis. The impetus for starting the competition was to provide regular matches for the New South Wales and Queensland teams in an attempt to compete against rugby league football - which was expanding its domestic competition in Australia. The New Zealand provincial teams Auckland and Canterbury were invited into the competition due to their close links with the New South Wales and Queensland unions respectively. A third New Zealand team, Wellington, was invited due to having an international airport in the city. Fiji was also invited into the competition as, at the time, it was the most competitive of the Pacific rugby teams.
History
The South Pacific Championship was dominated by New Zealand teams and, most particularly, by Auckland. Canterbury won the first title in 1986 and shared the second title with Auckland in 1987, but then Auckland won outright for the next three seasons in a row. The competition collapsed five years after it began, when the NSWRU found itself in financial difficulties before the 1991 season was started. ;SPC Championship Winner:
1986 Canterbury
1987 Auckland and Canterbury
1988 Auckland
1989 Auckland
1990 Auckland
1991 No competition
Relaunch
After the demise of the South Pacific Championship, with no tournament played in 1991, the competition was relaunched as the Super 6 in 1992. This followed a resurgence of rugby fortunes after the 1991 Rugby World Cup. The Super 6 title was won by Queensland in 1992. In 1993, the competition was revamped and expanded into the Super 10. South Africa's top three provincial teams were included and a fourth New Zealand province was added. Western Samoa, being the winner of the Pacific Tri-Nations, replaced Fiji. The Super 10 was won by Transvaal in 1993, and by Queensland in 1994 and 1995. ;Super 6 Championship Winner:
1992 Queensland
;Super 10 Championship Winner:
1993 Transvaal
1994 Queensland
1995 Queensland
1986 season
;Standings
1987 season
;Standings
1988 season
;Standings
1989 season
;Standings
1990 season
;Standings
1992 Super 6
The South Pacific Championship was relaunched as the Super 6 in 1992. The title was won by, in an undefeated Super 6 season for the Australian province. The Super 6 was the predecessor of the Super 10 that launched the following year in 1993 to include South African provinces in the competition. The Super 10 was, in turn, the predecessor of the Super 12, Super 14 and Super Rugby tournaments in the professional era of rugby union which started in 1996. ;Standings ;Matches