Tonight, from Las Vegas, Nevada, is the UFC's final event of the 2012 year, UFC 155.
The main card features three middleweight fights and six top competitors.
The co-main event is a lightweight matchup between Jim Miller and Joe Lauzon, and the winner of that could move on to a No. 1 contender fight. Then, in the main event, it's a rematch 13 months in the making, as Junior dos Santos will look to defend his heavyweight title by beating Cain Velasquez for a second time.
Let's take a look at a final breakdown of the main-card odds just hours before the card is set to start.
The first fight on the pay-per-view is a middleweight matchup featuring the UFC debut of Derek Brunson and the return of Chris "The Crippler" Leben.
Leben has been out since his last fight at UFC 138 thanks to a failed drug test and subsequent suspension. His last fight was a loss due to corner stoppage between the second and third rounds.
Meanwhile, Brunson's last fight was a knockout loss to Ronaldo Souza in just 41 seconds at Strikeforce: Rousey vs. Kaufman.
Chris Leben: -160
Derek Brunson: +150
Next up is the second middleweight fight, this one featuring former title challenger Yushin Okami and Alan Belcher in a rematch of their UFC 62 fight.
In their previous fight, Okami took home a unanimous decision over Belcher, although it was so long ago that the first fight may not matter all that much.
Okami's last fight was a relatively uninspired win over Buddy Roberts by second-round TKO. Prior to that, he dropped two straight to Tim Boetsch and Anderson Silva.
Belcher's most recent fight was against Rousimar Palhares, and Belcher came out on top in that one by first-round TKO.
Yushin Okami: -115
Alan Belcher: +105
In the third middleweight fight on the main card, Tim "The Barbarian" Boetsch will face off against late replacement Costa Philippou. Originally, Boetsch was to fight Chris Weidman, but Weidman was forced to pull out with an injury.
In Boetsch's previous fights, he earned a comeback TKO over Yushin Okami and followed that up with a split-decision victory over the former Bellator middleweight champion Hector Lombard.
Philippou is quietly on a nice streak in the UFC, having won four straight, with his only UFC loss in his debut. He has beaten several solid fighters, and this fight against Boetsch will determine who is a top contender and who is not.
Tim Boetsch: -107
Costa Philippou: -103
In the co-main event, we get to see lightweights Joe Lauzon and Jim Miller square off for a chance to move up the ranks in the division.
Lauzon comes into the fight following an outstanding battle with Jamie Varner at UFC on Fox 4—a fight that Lauzon won by third-round triangle choke. Overall, Lauzon has won three of his last four.
Meanwhile, Miller is looking to get back on track after a disappointing loss to Nate Diaz back at UFC on Fox 3 in May. He is 1-2 in his last three, with the win coming against Melvin Guillard and the other loss coming against Benson Henderson.
Joe Lauzon: +190
Jim Miller: -210
In the main event of the evening, Junior dos Santos will put his heavyweight title on the line against the man he took it from, Cain Velasquez.
dos Santos was last seen at UFC 146, where he put his title on the line against the former champion Frank Mir. dos Santos won the fight by second-round TKO. Before that, he knocked out Velasquez in 64 seconds at UFC on Fox 1.
Velasquez was last seen at UFC 146 as well, where he faced off against Antonio "Bigfoot" Silva. Cain took Bigfoot down within seconds and earned a TKO not too long after that.
Junior dos Santos: -190
Cain Velasquez: +175