Nick Diaz defeated BJ Penn at UFC 137 last night, sending "The Prodigy" into retirement. After the fight, Diaz ripped into UFC welterweight champion Georges St-Pierre, catapulting him into the top contender slot for St-Pierre's title.

In other featured bouts, Roy Nelson defeated Mirko Cro Cop, while Cheick Kongo derailed the Matt Mitrione hype train. You can get full detailed UFC 137 results at by clicking here.

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