"The Prodigy" BJ Penn is an MMA legend, a former UFC lightweight and welterweight champion, and one of the greatest non-Brazilian practitioners of Brazilian Jiu-Jitsu in the history of the sport. His boxing is also second to none, due to the speed and accuracy with which he comes forward.
In comparison, former Strikeforce welterweight champion Nick Diaz is an equally revered practitioner of Brazilian Jiu-Jitsu under the tutelage of Cesar Gracie. His striking is a high-volume version of what Penn's style brings to the fight game.
Both men are the best at what they do, and while neither man has anything negative to say about the other, the two will come into the cage with bad intentions at UFC 137.
Matt Mitrione has taken some time to cook the "Meathead" of TUF 10 infamy, and the current result is an undefeated hulk who has looked dominant so far. His first real test comes against the man who might be responsible for "The Comeback of 2011," French kickboxer Cheick Kongo, who has been on something of a tear as of late.
Finally, the incomparable Mirko "Cro Cop" Filipovic has been up and down as of late, alternating between wins and losses. However, not since a UFC 115 bout with Pat Barry has anyone possessed the tools to truly end the legendary career of Cro Cop the way Roy Nelson does. "Big Country" could get the job done, knowing that his failure to do so means a possible release from the UFC.
All this, plus the debut of "The Iron Broom" Hatsu Hioki, Donald "Cowboy" Cerrone and hopefully a taste of Kenda Perez in live blog format—all right here, as this is UFC 137 on Bleacher Report MMA!