UFC 137: Penn vs. Diaz is an upcoming mixed martial arts event to be held by the Ultimate Fighting Championship on October 29, 2011 at Mandalay Bay Events Center in Las Vegas, Nevada.
This event was originally expected to take place on October 15, 2011 at the Echo Arena in Liverpool, England. However, due to multiple scheduling issues with broadcast rights, the organization cancelled those plans.
UFC 137 will feature two preliminary fights live on Spike TV.
Dennis Siver was expected to face Sam Stout at this event, but Stout pulled out of the bout on August 29th and was replaced by Donald Cerrone.
Watch UFC 137 Live Stream Online Free. UFC 137: Penn vs. Diaz is an upcoming mixed martial arts event to be held by the Ultimate Fighting Championship on October 29, 2011 at Mandalay Bay Events Center in Las Vegas, Nevada.
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