Claressa Shields has vowed to KO Savannah Marshall in their undisputed middleweight grudge clash.
Shields and Marshall will meet for all the middleweight marbles on September 10 at The O2 arena in London, 10 years after Marshall handed her rival her only amateur defeat. But despite being without a knockout win in almost five years, Shields predicted she will stop Marshall late on.
"You're going to see a very exciting fight especially early on with Savannah Marshall and me being knockout punchers," she said. "I see myself coming out on top. I'm going to knock her out in rounds eight, nine or 10."
