UFC 155 photos are for the UFC event at the MGM Grand Garden Arena in Las Vegas, Nev. on Saturday night. UFC heavyweight champion Junior dos Santos will square off against former UFC heavyweight champion Cain Velasquez in the main event.
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- UFC 155 photos Cain Velasquez lands a left hook on Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Junior dos Santos enters the cage during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Bruce Buffer introduces Cain Velasquez and Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Herb Dean signals to Junior dos Santos and Cain Velasquez to fight during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez lands a left hook during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez attempts a single leg during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Junior dos Santos lands a jab on Cain Velasquez during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez works from Junior dos Santos' back during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez fires a right hand during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez attempts a single leg takedown on Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez catches his breath between rounds during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez lands a knee to the body of Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Junior dos Santos rests between rounds during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez wings a punch during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez and Junior dos Santos exchange punches during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez attempts an armbar on Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez lands a left hook on Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez fires a jab at Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Octagon girl Arianny Celeste signals the fifth round between Cain Velasquez and Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez scores a takedown during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez lands a jab during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez goes after a hurt Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez smiles in relief after his fight with Junior dos Santos during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez falls to the mat in delight during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez is declared the winner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cain Velasquez poses with his belt and AKA coaching staff during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Junior dos Santos exits the Octagon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Joe Lauzon and Jim Miller exhange strikes during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Joe Lauzon enters the cage during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller walks to the Octagon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller lands a body kick on Joe Lauzon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller lands a right hook on Joe Lauzon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Cutmen wipe the blood of of Joe Lauzon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller works from Joe Lauzon's guard during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Joe Lauzon tries to slam Jim Miller out of rubber guard during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Joe Lauzon is a bloody mess during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Joe Lauzon lands a left hook on Jim Miller during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller tries to land a right during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller puts his hands in the air after his bout with Joe Lauzon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Blood on the canvas after the Joe Lauzon vs. Jim Miller bout during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller is declared the winner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jim Miller poses with his AMA coaching staff during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Tim Boetsch inspects his own blood during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou cracks Tim Boetsch with an uppercut during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou tries to recover after eating a front kick during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou lands a right hand during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou ground and pounds Tim Boetsch during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou works from Tim Boetsch's guard during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou damages Tim Boetsch during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou celebrates his referee stoppage win over Tim Boetsch during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Costa Philippou is declared the winner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Yushin Okami blocks a kick from Alan Belcher during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Alan Belcher goes for a guillotine choke on Yushin Okami during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Yushin Okami lands a punch on Alan Belcher during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Yushin Okami is declared the winner over Alan Belcher during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Derek Brunson lands a left hook on Chris Leben during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Chris Leben eats a right hand from Derek Brunson during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Chris Leben enters the Octagon during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Chris Leben fires a jab at Derek Brunson during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Derek Brunson and Chris Leben exchange strikes during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Derek Brunson is declared the winner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Brad Pickett eats a left hand from Eddie Wineland during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Eddie Wineland cracks Brad Pickett with a right hand during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Eddie Wineland misses with a jab during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Eddie Wineland lands a left hand on Brad Pickett during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Brad Pickett throws a right hook during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Brad Pickett fires a left hook to the body of Eddie Wineland during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Eddie Wineland and Brad Pickett raise their hands after their fight during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Eddie Wineland is declared the winner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Eddie Wineland poses with coaching staff during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez enters the cage during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez throws a knee to Byron Bloodworth's middle during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez lands a hard right elbow on Byron Bloodworth during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez bombs on Byron Bloodworth during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez walks off after TKOing Byron Bloodworth during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez points to the sky during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez is declared the winner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Erik Perez and his coaching staff pose with luchador masks after his fight during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jamie Varner slams Melvin Guillard during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Melvin Guillard head kicks Jamie Varner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jamie Varner enters the cage during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Jamie Varner cracks Melvin Guillard with a right during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Melvin Guillard lands a hard middle kick on Jamie Varner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Melvin Guillard attempts an armbar on Jamie Varner during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Myles Jury unloads on Michael Johnson during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Myles Jury scores a takedown on Michael Johnson during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Myles Jury batters Michael Johnson along the cage during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Myles Jury is declared the winner over Michael Johnson during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Todd Duffee lands a right on Phil De Fries during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Phil De Fries lands a right on Todd Duffee during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Referee Yves Lavigne stops the fight between Todd Duffee and Phil De Fries during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Todd Duffee is declared the winner over Phil De Fries during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Max Holloway connects with a right during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Leonard Garcia lands a punch during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Leonard Garcia lands a punch while Max Holloway throws a knee during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Max Holloway is declared the winner over Leonard Garcia during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos John Moraga lands a left on Chris Cariaso during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos Chris Cariaso fires a kick to the head of John Moraga during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos John Moraga is excited in victory during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.
- UFC 155 photos The crowd during UFC 155 at the MGM Grand Garden Arena in Las Vegas on Sat., Dec. 29, 2012.