 The term has also frequently been appearing in sports in Japan since late 20th century, including sumo where there has been only one Japanese-born yokozuna since 1998 as most of the top players have been from Mongolia or Polynesia.Similarly in combat sports ("kakutougi"), K-1 was the biggest kickboxing promotion of the world, whereas Pride Fighting Championships was the biggest mixed martial arts promotion of the world.Nevertheless, both K-1 and Pride had few Japanese-born popular players or champions.