Watch UFC 137: Penn vs. Diaz

UFC 137: Penn vs. Diaz was a mixed martial arts (MMA) event held by Zuffa LLC at the Mandalay Bay Events Center in Las Vegas, Nevada, on October 29, 2011. The event featured an exciting lineup of fighters, including seasoned veterans and rising stars of the sport.

One of the most anticipated fights of the night was the main event between former two-division champion, and UFC Hall of Famer, BJ "The Prodigy" Penn and Stockton, California's notorious Nick Diaz. Both fighters were known for their striking abilities, as well as their grappling skills, making this a matchup that promised to deliver fireworks.

Another highlight of the event was the return of Croatian striker Mirko "Cro Cop" Filipovic. After a brief retirement, the former Pride heavyweight superstar made his comeback to the Octagon, facing off against up-and-coming heavyweight fighter Roy Nelson.

Also on the card was a featherweight bout between Jeff Curran and Scott Jorgensen. Curran, a veteran of the sport, was making his UFC return after an eight-year absence. The fight promised to be a thrilling matchup, with both fighters known for their well-rounded skill sets.

The event started with an exciting preliminary card, featuring a mix of up-and-comers and seasoned veterans. The first fight saw Ramsey Nijem take on Danny Downes in a lightweight bout, with Nijem emerging victorious. Chris Camozzi then took on Francis Carmont in a middleweight fight, with Carmont winning a unanimous decision. Australian fighter, and former rugby player, Dylan Andrews made his UFC debut against welterweight veteran, and TUF 11 competitor, Costas Philippou, but suffered a knockout loss in the first round. In the final preliminary fight, lightweight fighter Gleison Tibau faced Rafael dos Anjos, with dos Anjos winning a decision victory.

As the main card began, the energy in the arena reached a fever pitch. The first fight was a welterweight bout between Cheick Kongo and Matt Mitrione. Kongo, known for his striking prowess, and Mitrione, a former NFL player with heavy hands, were both looking to make a statement. The fight provided some tense moments, but Mitrione ultimately won by KO in the first round.

The next fight was the featherweight bout between Jeff Curran and Scott Jorgensen. The fight saw Curran display his considerable grappling skills, but Jorgensen ultimately won a unanimous decision victory.

The co-main event saw the long-awaited return of Cro Cop, who faced off against Roy Nelson. Cro Cop started strong, landing some trademark kicks, but Nelson was not intimidated, and proved to be a formidable opponent. In the third round, Nelson secured a TKO victory, handing Cro Cop the first three-fight losing streak of his legendary career.

The main event between Penn and Diaz was a compelling back-and-forth affair, with both fighters landing significant strikes throughout the fight. Diaz, known for his relentless pace, pushed the pace throughout the fight, but Penn was more than up to the challenge. In the end, Diaz emerged victorious, winning a unanimous decision over the former champion.

UFC 137 proved to be a night of exciting fights, memorable moments, and top-notch athleticism. With a mix of established stars and up-and-coming fighters, the event showcased the depth and breadth of talent in the sport of MMA.

UFC 137: Penn vs. Diaz is a series that ran for 1 seasons (11 episodes) between February 27, 2012 and on Zuffa LLC