In 1952, he starts a Tourney through the United States and Asia, accepting challenges from fighters from all kinds of disciplines; Judo, Karate, Tai boxers, English boxers, etc.
All fights were won, in a total 270 challenges, not one lasted more than three minutes. And the New York Times called Mas Oyama, in 1960, 'The toughest man in the world.'
Masutatsu showed Japan and the whole world Kyokushinkai, through several books:
What is Karate? - 1958; This is Karate - 1965; Advanced Karate - 1970;
Karate, world of the ultimate-1984.
Masutatsu Oyama passed away in April 1994, after a whole life dedicated to Karate.
See Mas Oyama video clips on Nantzu’s Kyokushin playlist on YouTube Click here