Rocky Johnson is most notable for his win by submission over an American mixed martial artist who competes for who?
Benson Henderson Benson Henderson (born November 16, 1983) is an American mixed martial artist who competes for Bellator MMA, and is a former UFC Lightweight Champion and WEC Lightweight Champion.
Mike Rio Michael Alexander Rio (born July 6, 1981) is an American mixed martial artist who competed most recently in the Lightweight division of the Ultimate Fighting Championship. He was also a competitor on the 15th season of The Ultimate Fighter. He now fights for Fight Time Promotions.