Heavyweights Deontay Wilder and Tyson Fury jettisoned their previously cordial tone in favor of a heated and personal exchange in the final news conference before their highly expected rematch on Saturday in Las Vegas. Here are a few things to know about the bout.

Heavyweights Deontay Wilder and Tyson Fury have both promised knockouts to avoid going to the judges' scorecards when they meet again on Feb. 22 in Las Vegas with Wilder's WBC world title on the line.