Santel defeated Ito and proclaimed himself World Judo Champion. The response from Jigoro Kano's Kodokan was swift and came in the form of another challenger, 4th degree black belt Daisuke Sakai. Santel, however, still defeated the Kodokan Judo representative. The Kodokan tried to stop the hooker by sending men like 5th degree black belt Reijiro Nagata (who Santel defeated by TKO). Santel also drew with 5th degree black belt Hikoo Shoji. The challenge matches stopped after Santel gave up on the claim of being the World Judo Champion in 1921 in order to pursue a career in full-time professional wrestling. Although Tokugoro Ito avenged his loss to Santel with a choke, official Kodokan representatives proved unable to imitate Ito's success. Just as Ito was the only Japanese judoka to overcome Santel, Santel was the only Western catch-wrestler on record as having a win over Ito, who also regularly challenged other grappling styles. Karl Gotch was a catch wrestler and a student of Billy Riley's "Snake Pit" training school in the Aspull area of Wigan in Greater Manchester. Gotch taught catch wrestling to Japanese professional wrestlers in the 1970s including Antonio Inoki, Tatsumi Fujinami, Hiro Matsuda, Osamu Kido, Satoru Sayama (Tiger Mask) and Yoshiaki Fujiwara. Starting from 1976, one of these professional wrestlers, Inoki, hosted a series of mixed martial arts bouts against the champions of other disciplines. This resulted in unprecedented popularity of the clash-of-styles bouts in Japan. His matches showcased catch wrestling moves like the sleeper hold, cross arm breaker, seated armbar, Indian deathlock and keylock. Gotch's students formed the original Universal Wrestling Federation (Japan) in 1984 which gave rise to shoot-style matches. The UWF movement was led by catch wrestlers and gave rise to the mixed martial arts boom in Japan. Wigan stand-out Billy Robinson soon thereafter began training MMA veteran Kazushi Sakuraba. Catch wrestling forms the base of Japan's martial art of shoot wrestling. Japanese professional wrestling and a majority of the Japanese fighters from Pancrase, Shooto and the now defunct RINGS bear links to catch wrestling. Randy Couture, Kazushi Sakuraba, Kamal Shalorus, Masakatsu Funaki, Takanori Gomi, Shinya Aoki and Josh Barnett, among other mixed martial artists, study catch wrestling as their primary submission style.