Champion Carnival
From 1959 to 1972, the Japan Pro Wrestling Alliance (JWA), run by Rikidōzan, held a tournament called World League (also known as the "World Big League"), which featured both Japanese and foreign professional wrestlers. Rikidōzan himself dominated the annual tournament early on, however, after his death in 1963, the tournament was won six times by Giant Baba and once by Antonio Inoki. JWA folded shortly after both Baba and Inoki left the promotion to create All Japan Pro Wrestling (AJPW) and New Japan Pro-Wrestling (NJPW), respectively. Both men took the concept of World League with them to their new promotions, with Baba creating the "Champion Carnival" in 1973 and Inoki creating the World League in 1974, later renaming it G1 Climax.
Wrestling World 1997
Wrestling World 1997 was a professional wrestling event co-produced by the New Japan Pro-Wrestling (NJPW) and Big Japan Pro Wrestling (BJW) promotions. It took place on January 4, 1997 in the Tokyo Dome. Officially, the show drew 62,500 spectators and $5,000,000 in ticket sales. The show featured 12 matches, including four matches that were promoted jointly with the BJW promotion and presented as a rivalry between the two promotions. The show featured 12 matches in total, including three title matches, two of which saw new champions crowned.