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.
Japan Pro Wrestling Alliance
After Rikidōzan’s death in 1963, the company continued to operate as the nation’s premier (and only male) wrestling circuit until challenged in the late 1960s by International Wrestling Enterprise, which featured the first major World heavyweight championship based in Japan, the IWA title. The JWA's top stars, Giant Baba and Antonio Inoki left to form their own promotions (All Japan Pro Wrestling and New Japan Pro Wrestling, respectively) in 1972. With its top drawing cards gone, the JWA was therefore out of business the following year.World Big League, also known as World League was a professional wrestling tournament annually held by Japanese Wrestling Association from 1959 till 1972. The 1973 edition was not held as JWA folded that year.