The 1st Kyokushin World Tournament was held in 1974. I believed that was when the full contact Karate tournament started.You must be referring to point style fighting because all forms of roundhouse kicks (mawashi geri) were used in tournament fighting dating back to the 1st Kyokushin World Tournament.
I didn't fight the full contact Karate tournament myself. But I was the training partner for some full contact Karate fighters (Joe Averado and his black belts). I still remember one of Joe's black belt broke his hand by using "ridge hand" in full contact. I gave him some of my iron palm training medicine for that. Those were some good old days.
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