UPDATE: Canelo Alvarez retained his title with a devastating knockout in the sixth round.

PREVIEW: The highly anticipated fight between Canelo Alvarez and Amir Khan is here as the two boxers battle for the WBC middleweight title at T-Mobile Arena in Las Vegas. Oddsmakers have made Alvarez the significant favorite, and few experts are picking Khan to pull off the upset.

It’s a night of firsts for Saturday’s pay-per-view. It’s the first ever boxing event at T-Mobile Arena, which opened just a month ago. It’s also Khan’s first ever fight as a middleweight. The Brit’s last bout was a unanimous decision victory over Chris Algieri at welterweight, and he had moved up from light welterweight just two fights earlier.

It’s the fifth straight time that Alvarez will fight at 155 pounds. He’ll defend his middleweight belt for the first time, having won it from Miguel Cotto in November.

The winner of the fight will have to face Gennady Golovkin, who is in Las Vegas for the fight, in order to keep the WBC middleweight belt. Alvarez, however, might look to face another opponent in September.

Manny Pacquiao and Timothy Bradley faced off in the first big PPV of 2016 last month, but Alvarez vs. Khan is the biggest bout of the year, thus far. Alvarez is now the biggest draw in boxing, and Khan is finally getting his chance to face one of the world’s best pound-for-pound fighters.

Kenny Bayless is the referee. Adalaide Byrd and Glenn Trowbridge of Las Vegas are judges, as well as Connecticut's Glenn Feldman. Two of Alvarez’s last four fights have gone the distance, and Khan has four consecutive wins by judges’ decision.

Here is how International Business Times is scoring the Alvarez-Khan fight:

Round 1

A hard right hand by Khan is the first big punch of the night. Khan's showing his speed, forcing Canelo to miss with his left hook in the first minute. Alvarez landed a few shots to the head, but Khan’s big punch and a few combinations give him the opening round.

Khan 10-9

Round 2

Alvarez is more aggressive to open the second, though he’s swinging and missing often. Khan had a few good counters, using his speed to avoid much punishment. A great start for the underdog.

Khan 10-9

Round 3

The closest round thus far. Khan eats a left hook early on and continues to utilize his quickness. Not a whole lot of action, but a late flurry gives Khan the edge again.

Khan 10-9

Round 4

Alvarez seems to be settling in, landing some good body shots. Khan had a good counter with a few shots to the head, but Alvarez did more damage this round.

Alvarez 10-9

Round 5

Alvarez finally lands a good left hook, seemingly shaking up Khan. The favorite is starting to land more power punches, especially to the body, and Khan is bleeding under his right eye.

Alvarez 10-9

Round 6

That’s it! Canelo knocks out Khan, leaving Khan on the canvas for about a minute. It was an overhand right to Khan's chin that knocked the Brit out cold. After a competitive fight, Alvarez landed the knockout punch he had been hoping to land for much of the fight.