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Countdown to UFC 137 Full Video Preview for “Penn vs. Diaz”

Countdown to UFC 137, the official preview show for Saturday’s “UFC 137: Penn vs. Diaz” event, debuted this week on Spike TV and the full video is now available online. Welterweight contenders BJ Penn and Nick Diaz clash in the UFC 137 main event, while the Oct. 29 card in Las Vegas also features heavyweights Matt Mitrione vs. Cheick Kongo and Roy Nelson vs. Mirko Cro Cop.

Watch the full “Countdown to UFC 137″ video below:

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