UFC 137 open workout with Nick Diaz and B.J. Penn *VIDEO*

ProMMAnow.com (www.prommanow.com) was on the scene at the UFC 137 open workout on Wednesday at the TUF Training Center in Las Vegas and shot the following footage of B.J. Penn working out with his coach Jason Parillo, and Nick Diaz working out with his brother and fellow UFC fighter Nate Diaz. We also have a complete photo gallery from the open workout.

See more ProMMAnow.com exclusive UFC 137 coverage.

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