UFC 162 takes place Saturday night from the MGM Grand in Las Vegas, headlined by a UFC middleweight championship bout between Anderson Silva and Chris Weidman. Weidman's wrestling and submission game makes him the closest betting underdog to the dominant Silva in many years. Many in the sport, particularly fighters, feel Weidman is Silva's most dangerous challenger.

UFC middleweight title: Anderson Silva vs. Chris Weidman

Anderson Silva is unquestionably the most dominant fighter in UFC history, with a sparkling 16-0 record and rock solid legacy. Weidman at 9-0 has nothing resembling the resume of Silva but does possess a style that could give Silva difficulty. He is an excellent wrestler with a dangerous submission game as well. A big factor could be how Weidman deals with the mental pressure of fighting an opponent so feared and dominant. Many fighters have come into the cage against Anderson Silva already psyched out and Weidman has never fought in a fight remotely this high profile.

Round 1. The fighers don't touch gloves. Weidman shoots for a takedown and he gets it. He drops down some big punches and works into half guard. He drops down elbows to go with the punches and looks to isolate Silva's arm. Silva gets out of danger and Weidman has to posture up to land more punches. He begins dropping down punches from the feet and rolls for an ankle of Silva. Silva gets out and returns to his feet. Silva stands next to the cage and puts down his hands. He welcomes Weidman in and Weidman punches him. Silva says okay and then lands a few kicks to the legs. Weidman goes for punches that land on air and Silva just encourages him for more. Silva encourages him to throw leg kicks and taunts Weidman before throwing punches of his own. Silva is playing around but he lost that round. 10-9 Weidman.

Round 2. Silva is taunting Weidman and encouraging him on before th start of the second round. Perhaps he is trying to bait him into a standup fight. As Weidman throws a punch, Silva feigns that he is hurt and begins dancing around. Weidman goes for a takedown but doesn't get it. Silva lands some hard leg kicks. Weidman goes for a punch. Silva taunts him and encourages him to throw more. So Weidman lands a punch that knocks Silva out. Silva was bobbing his head around dodging Weidman's punches but then got hit with a hook he didn't see and that was it. Just a moment before Silva was knocked out he was wobbling his knees pretending to be hurt to mock Weidman.

Winner: Chris Weidman, KO, round 2.

Mike Pierce vs. David Mitchell

Pierce is one of the more underappreciated fighters in the UFC welterweight division, due in part to his style of fighting. He has won three straight fights and has only lost in the UFC to elite opponents. Mitchell is a submission oriented fighter with a 1-2 record.

Round 1. Pierce closes the distance early and pushes Mitchell against the cage. He grabs a double leg but isn’t able to take Mitchell to the ground. They remain in the clinch and exchange body shots. They separate and Pierce connects with a nice hook before looking again for the takedown. Neither fighter is able to gain an advantage so they remain tied up in the clinch. Mitchell lands a pair of nice knees to the body and Pierce responds with one of his own. They separate briefly and Pierce lands a nice straight punch and leg kick. Very dull first round. 10-9 Pierce.

Round 2. Pierce again instigates a clinch and again neither fighter is able to gain much of an advantage. Upon the break, Pierce connects with a few punches. This time, Mitchell goes for the clinch and throws a series of knees to the body. Upon a break from the clinch, Pierce lands a hard looping punch. Mitchell goes down and Pierce pursues him to the ground with a series of hammerfists that force the referee to stop the bout. That was a typical Pierce performance: grinding and unexciting but effective.

Winner: Mike Pierce, TKO, round 2.

Seth Baczynski vs. Brian Melancon

Baczynski has been successful in the UFC following his stint on the Ultimate Fighter television show. He won four fights in a row with submissions and a knockout before dropping his last contest to Mike Pierce. Melancon is making his UFC debut, transferring over to the UFC from Strikeforce. He is only 6-2 in MMA but has fought for a number of prominent organizations including Strikeforce, Bellator, Legacy and now the UFC.

Round 1. Baczynski has a big length and reach advantage, but Melancon has no trouble closing the distance and landing the shots early. He lands a hard left hook early. Moments later he drops Baczynszki with another big shot and looks to finish the fight on the ground. He isn't able to close so he lets Baczynski back up. He then takes Melancon down. Very late in the round, Melancon drops down a bomb from his feet to the grounded Baczynski and a few additional punches as the bell sounds to signal the end of the round. Baczynski can't continue and the fight is called with a second left. That was a great performance by Melancon in his UFC debut.

Winner: Brian Melancon, TKO, round 1.

Edson Barboza vs. Rafaello Oliveira

Barboza is considered one of the top Brazilian prospects in any weight class, with a 11-1 record and wins over high quality fighters like Ross Pearson, Terry Etim and Anthony Njokuani. He suffered his only setback last year in a shocking TKO upset by Jamie Varner. Oliveira is 15-5 in MMA competition but 2-4 in the UFC. He isn’t considered at Barboza’s level and was an injury replacement for John Makdessi here.

Round 1. Oliveira immediately moves to close the distance but eats a couple counters in the process. Barboza rips a fast kick to the body that elicits an "ooh" from the crowd. Oliveira shoots for a takedown but is easily stuffed. Barboza then turns Oliveira around with one of his vicious leg kicks. Oliveira goes for another takedown but Barboza avoids it. Oliveira connects with a straight left punch and goes for another takedown. It is blocked once more and Barboza goes back to work with leg kicks. Oliveira has another takedown attempt blocked. Barboza mixes kicks to the body and legs. He circles around and is light on his feet, attempting to avoid providing an easy target for a takedown. After another hard leg kick Oliveira begins noticeably limping. Oliveira's leg is bleeding from multiple spots. 10-8 Barboza.

Round 2. Barboza goes back to work with a kick to the body and kick to the leg. He catches Oliveira off balance with a punch but lets him back up. Oliveira then catches Barboza off balance with a punch and tries to use it to get a takedown. Barboza works his way back up to the feet and goes back to the kicks. Oliveira goes down twice from leg kicks and after two more Oliveira goes down again and Herb Dean calls off the fight. Oliveira is in great pain. That was a good stoppage.

Winner: Edson Barboza, TKO, round 2.