B.J. Penn and Matt Hughes faced off for the first time in 2004 in what would be the start of a memorable rivalry. Penn faced five-time defending welterweight champion Hughes at UFC 46 as he made his 170-pound debut, but the Hawaiian looked instantly at home as he dominated the reigning champion on the mat to secure a memorable victory. Penn got Hughes on his back early, and “The Prodigy” never let him off the hook. He controlled him in top position for the majority of the round before eventually transitioning to his back with under a minute left and securing the rear-naked choke that forced the tap
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UFC free fight: B.J. Penn dethrones Matt Hughes to claim welterweight title – MMA Junkie