BBC Sport - Kell Brook v Gennady Golovkin: Briton predicts upset

Brook promises to 'shock the world'

British IBF world welterweight champion Kell Brook promises to "shock the world" and beat undefeated IBF and WBC world middleweight champion Gennady Golovkin.

READ MORE: Crazy Brook aiming for greatness

WATCH: How Brook is preparing for Golovkin fight

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