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Stipe Miocic knocks out Alistair Overeem at UFC 203

Defending champion Stipe Miocic takes on former Strikeforce title-holder Alistair Overeem for the Ultimate Fighting Championship heavyweight belt on Saturday night at Quicken Loans Arena in Cleveland. Additionally, famed pro wrestling star CM Punk makes his MMA debut against Mickey Gall. Follow the fight-by-fight, round-by-round coverage here.