By Carlos Boogs

IBF welterweight champion Kell Brook (36-0, 25KOs) is ready to fight fire with fire with when he steps in the ring with IBF/WBC/WBA/IBO middleweight world champion Gennady 'GGG' Golovkin (35-0, 32KOs)

Brook will move up by two divisions and thirteen pounds to challenge Golovkin for three of his four middleweight belts.

Brook believes Golovkin and his handlers are viewing this contest as an easy assignment. He plans to change Golovkin's mind very quickly when the first bell rings.

Golovkin is a huge favorite to win the fight. He stopped his last 22 opponents inside the distance. Brook's biggest win came in 2014, when he traveled over to the United States to unseat Shawn Porter for the IBF welterweight title. He's been avoided by several of the top names in his division and says he was forced to make this dangerous move in order to get a big fight.

Brook strongly feels that most of Golovkin's opponents are terrified before they enter the ring. He plans to enter like a man with zero respect for his opponent. 

"He's going to be in for a big shock, him and his team are, when they clear that ring and it's just me and him in there.  He's going to realize from the first jab I throw, that he's not fighting a welterweight, that he's fighting someone who means business and is determined to take those belts away from him... [he'll realize that] he's in a real fight," Brook told BoxingScene.com's Declan Taylor.

"He's in a real fight with a guy who's got no respect for him. He's got to show me something to get that respect. I'm going in there kill or be killed. That's where we are. Come September 11th, I'm going to be the unified middleweight champion of the world."