Ryan Garcia has vowed to knock out Gervonta Davis when the pair meet in Las Vegas on April 22.
Davis and Garcia will put their undefeated records on the line in a 136lb catchweight clash at the T-Mobile Arena.
The American stars came face-to-face twice this week at press conferences in New York and Los Angeles respectivelty to promote their much-anticipated superfight.
Garcia has recorded 19 knockouts from his 23 victories and said he would inflict a first defeat on his 28-year-old rival, who is a clear favourite with the bookies.
“I’m here to win and I promise you that I have heart and determination like you’ve never seen before,” the 24-year-old said during Thursday’s press conference.
“‘Tank’ likes to fight guys that don’t hit hard, but I hit hard.
“When I hit you with that left hook, you’re gonna be on the floor. Asleep. Good night.
“You’re going to wake up in the hospital.”
The two fighters then entered a heated argument whilst Garcia was on the dais with the Californian questioning the rehydration clause which means both cannot weigh more than 146lbs on fight night.
‘King Ry’, who stopped Javier Fortuna in six rounds in July, opted against taking an interim fight before facing three-weight world champion,‘Tank’, who halted Hector Luis Garcia in the ninth round in January.
Garcia warned Davis that he has plenty in arsenal to trouble him other than just his left hook, which has become his money punch.
“I’m just going to let him think what he thinks,” he added.
“If he thinks all I have is the left hook, then he’s going to run into other shots and be confused.
“If he had watched any of my fights he’d understand I’ve got a lot of other punches.
“Don’t be mad that my left hook is blessed. Maybe that’s all I need. Maybe that’s all it’s gonna take.
“He’s going to try to walk me down, but when he feels shots like this, he’s not going to want to do that.
“I’m going to hit him to the body and take the aggression out of him. I have a lot of ways to stop him.”
