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.
Houston Alexander Houston Alexander (born March 22, 1972) is an American professional mixed martial artist, who currently competes in Bellator's Light Heavyweight division. A professional competitor since 2001, Alexander has also competed for the UFC, Shark Fights, the RFA, and KSW.