After coming face to face in the pre-fight press conference, Canelo Alvarez and Caleb Plant came to blows following words that were exchanged between the two men in a heated argument.
Alvarez pushed Plant away, but the American boxer threw a punch with his left hand, with Alvarez ducking and releasing a punch of his own.
The staff of both teams jumped in to separate the two boxers, with Plant leaving with a wound on his nose and right cheekbone, which led to a delay of the pre-match presser for a few minutes.
Alvarez and Plant will take to the ring on November 6 in Las Vegas for a fight that will decide the undisputed super middleweight champion.