The is a professional wrestling round-robin tag team tournament held by New Japan Pro-Wrestling as a spin-off of the popular singles tournament, the G1 Climax. It was created in 1991 as the Super Grade Tag League, as a continuation of a regular tag team tournament held since 1980, gaining the name in 1999. In 2012, NJPW's new owners, the Bushiroad company, renamed the tournament to its current form. Since the tournament acquired its current name, the winning team earns the right to challenge for the IWGP Tag Team Championship at the following year's Wrestle Kingdom, assuming the team does not hold the title at the time of their victory. The World Tag League is held under a points system, with 2 points for a win, 1 for a time limit draw, and 0 for a loss, no contest or double decision. The current format, introduced in 2014, is essentially identical to that of the G1 Climax, with the top-scoring team from two blocks of eight advancing to the final. List of winners 1980 The 1980 MSG Tag League featured 9 teams in a single block and was held from November 21 to December 10, 1980. 1981 The 1981 MSG Tag League featured 10 teams in a single block and was held from November 19 to December 10, 1981. Due to a tie for second place, the two second-place teams faced each other in a semifinal to decide the finalists. 1982 The 1982 MSG Tag League featured 8 teams in a single block and was held from November 19 to December 10, 1982. "Young Simpson" may be a mistranslation; no data has been found other than being tag team partner of British wrestler Wayne Bridges. 1983 The 1983 MSG Tag League featured 9 teams in a single block and was held from November 18 to December 8, 1983. † Hanson was injured and could not compete in the final. 1984 The 1984 MSG Tag League featured 7 teams in a single block and was held from November 16 to December 5, 1984. 1985 The 1985 IWGP Tag Title League featured 8 teams in a single block and was held from November 15 to December 12, 1985. †Brody and Snuka no-showed the finals and jumped to All Japan Pro Wrestling 1986 The 1986 Japan Cup Tag League featured 8 teams in a single block and was held from November 14, 1986 to