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.
Super Junior Tag Tournament
Super J Tag Tournament was a one-night professional wrestling tournament hosted by New Japan Pro-Wrestling and took place on May 8. Most of the wrestlers involved were signed to New Japan but did feature wrestlers from other promotions like Mascara Dorada and Valiente from Consejo Mundial de Lucha Libre, Kota Ibushi from Dramatic Dream Team, Fujita Hayato and Taro Nohashi from Michinoku Pro Wrestling, and Kushida from Smash.