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Video highlights from the Mandalay Bay Events Center in Las Vegas as main event fighters BJ Penn and Nick Diaz hit the scale.
Be sure to check out co-main event fighters Cheick Kongo and Matt Mitrione as they stare each other down, as well the full UFC 137: Penn vs. Diaz weigh-in video is also available after the jump.
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Heavyweights Matt Mitrione and Cheick Kongo
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The full UFC 137 weigh-in video