Joseph Parker stunned Deontay Wilder in a unanimous decision on Saturday in the first bout of a heavyweight doubleheader at the Kingdom Arena. The 31-year-old Parker, a big underdog according to FanDuel Sportsbook, looked like the better fighter throughout, while the 38-year-old Wilder looked his age in this matchup of former heavyweight champions. There was only one round in which Wilder got the better of Parker.