Former two division world champion Timothy Bradley is backing Mexican superstar Saul "Canelo" Alvarez to score a sensation knockout on Saturday night, when he faces Caleb Plant in a full division unification.

Canelo and Plant will collide for the WBC, IBF, WBA, WBO super middleweight titles at the MGM Grand in Las Vegas, as the headline bout of a Showtime Pay-Per-View event.

Canelo is coming off a knockout victory over Billy Joe Saunders, which took place in May. He's been very active, with Plant being his fourth fight in a twelve month period of time.

There is bad blood between the two boxers. They traded punches at the kick-off press conference to announce the fight in Los Angeles.

"The bad blood between these two is real. Punches were thrown at a news conference, and injuries transpired. Early blood was shed. My concern for Plant is not that he'll take that animosity to heart, and get overly aggressive. It's that the difficulty of not being able to shut off his mind will add to a lot of things he already has to manage in this fight," Bradley said to ESPN.

"It could also weigh on the preparation for the fight. Overtraining is a huge concern, especially because Plant tends to fade late in fights. And with that tendency, you have to question the preparation that Plant and his team have under the best of circumstances, let alone when Plant needs to be at his full potential heading into Saturday and then fight the perfect fight. As opposed to Alvarez staying busy, if Plant fought more often than three times in two years, he would have a better understanding of his body and what's needed to make him tick."

Plant needs to have the perfect fight to win, says Bradley, but the retired boxer does not expect that scenario to take place.

"Plant is 21-0 and the IBF super middleweight champion for a reason. The win over Jose Uzcategui was impressive, and he has had some good title defenses. But he has never been in there with anyone close to the level of Alvarez," Bradley said.

"As I said before, he's going to have to fight a perfect fight, and while Plant has the tools to potentially do it, I just don't see it happening. There's a reason Alvarez is a 10-1 betting favorite. I don't see this fight going the distance either. I think Alvarez pieces Plant up, and then knocks him out with a body shot in the middle to late rounds."