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Boxing "needs another undisputed heavyweight champion", says former world title holder Lennox Lewis. "The Americans are crying out for another champion; they believe the title needs to come back to the US."

Deontay Wilder fights for the WBC world title on Saturday 17 January against champion Bermane Stiverne, in a bid to be become the first American heavyweight champion in eight years.

This is a clip from Sportsworld on Saturday 17 January 2015.

Credit: (Getty Pictures)