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.
Jacob Volkmann Jacob Joseph Volkmann (born September 5, 1980) is an American mixed martial artist currently competing in the Welterweight division. A professional MMA competitor since 2007, Volkmann has formerly competed for the UFC, Bellator, and the World Series of Fighting.