Nick Diaz: Diaz retires Penn at UFC 137, gets title shot

In one of the more intriguing showdowns of the year, former two-division champion BJ Penn takes on Nick Diaz, who returns to the UFC's Octagon for the first time in almost five years. Diaz will enter the bout on a career-best 10-fight winning streakBen Thapa's Judo Chop on Nick Diaz. Submissions and unorthodox moves that led to victory.Ben Thapa's Judo Chop on Nick Diaz. Submissions and unorthodox moves that led to victory.Nick Diaz has spoken at length about BJ Penn being a

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