UFC 163 takes place Saturday night from Rio De Janeiro, Brazil, headlined by a UFC featherweight title bout pitting champion Jose Aldo and challenger "Korean Zombie" Chan Sung Jung. Aldo is the only fighter to have held the UFC featherweight title and has been universally regarded as the world's best 145 pound fighter since 2009. Jung, a cult favorite, is known for his colorful nickname and never-back-down style. In the co-feature, rising American star Phil Davis seeks to upset the Brazilian karate specialist Lyoto Machida.

In preliminary action, Viscardi Andrade gave Bristol Marunde an unpleasant welcome to Brazil with a first round TKO at 1:36. Francimar Barroso won a lackluster unanimous decision over Ednaldo Oliveira. And submission specialist Rani Yahya outgrappled Josh Clopton to secure a unanimous decision win.

Ian McCall vs. Iliarde Santos

McCall is widely considered one of the world's top flyweight fighters, but lost his last two fights against elite competitors Joseph Benavidez and Demetrious Johnson. He seeks to rebound against the Brazilian Santos, who is debuting at 125 pounds. Santos won six fights in a row before losing his last contest to bantamweight prospect Iuri Alcantara.

Round 1. The fight starts at a brisk pace, with each man throwing mostly straight punches and McCall mixing in a lot of low kicks as well. McCall lands the best early shot of the fight around two minutes in with a heavy hook to the chin of Santos. Santos goes for a takedown but McCall stuffs it without difficulty and takes top position. Santos looks to stand up. McCall takes his back and lands a few big punches but Santos is able to get up. Santos lands a nice overhand right but McCall goes right back to work. He's a lot quicker and more precise as well. Santos lands a nice pair of punches late and shoots for a takedown but McCall avoids that. 10-9 McCall.

Round 2. McCall starts off the round by throwing a series of leg kicks. Santos isn't consistently able to check them. Santos looks for a takedown but again doesn't come close. The fighters exchange power hooks from close range. McCall continually lands and gets out. Santos is having real trouble connecting. But he does connect with a nice 1-2 punch combination with a minute and a half left and then gets a takedown. McCall stands back up, eating a few punches in the process. He connects with an uppercut at the close of the round. 10-9 McCall.

Round 3. Santos starts the round doing better in the standup than in the previous two rounds. McCall switches levels and looks to take him down. He isn't quite able to get the takedown and Santos pushes in looking for a finish. Santos connects with a pair of jabs and then loads up a power right. He looks for a takedown but McCall blocks it. Santos hits McCall with a hard kick to the body. McCall goes back to work with leg kicks and continues to circle out of the thick Santos' power. 10-9 Santos. Santos came on late but it was too little, too late. 29-28 McCall.

Winner: Ian McCall, unanimous decision (30-27, 29-28, 30-27).

Sergio Moraes vs. Neil Magny

Moraes is a Brazilian Jiu Jitsu black belt and has won most of his professional MMA bouts via submission. He is 1-1 in the UFC. Magny won his UFC debut in February of this year and sports a 8-1 MMA record.

Round 1. Magny looks to establish his jab early. Moraes throws some leg kicks. They clinch and Moraes uses a nice trip to get the fight to the ground. He quickly passes guard and works into more advantageous side control position. Moraes then gains full mount. He locks in a triangle choke from the top then rolls over. He throws a series of elbows from the bottom then rolls back to the top and gets the tap.

Winner: Sergio Moraes, submission, round 1.

Amanda Nunes vs. Sheila Gaff

The Brazilian Nunes is making her UFC debut in this fight. She has a 7-3 career record but lost her last fight to Sarah D'Alelio in the Invicta promotion. Gaff is a German fighter who was stopped in the first round of her UFC debut against Sara McMann.

Round 1. Nunes looks for a takedown. In a scramble, Gaff is almost able to get Nunes' back but Nunes avoids the bad position and returns to her feet. Nunes then takes Gaff down. She quickly works into side control. Nunes mounts Gaff but Gaff quickly powers out and stands up. Nunes takes her back down and lands a series of elbows until the fight is stopped.

Winner: Amanda Nunes, TKO, round 1.

Vinny Magalhaes vs. Anthony Perosh

Magalhaes, a world class submission grappler, was the runner-up on the Ultimate Fighter TV show back in 2008. He has improved his striking over time and become a more versatile fighter. Perosh has a 13-7 MMA record. He is 41 years old and lost via 7 second knockout in his last fight.

Round 1. Perosh drops Magalhaes with a right cross and knocks him out with additional punches on the ground.