Jake Paul's unanimous victory over former heavyweight champion Mike Tyson might have been disappointing from a competitive standpoint, but it drew record betting. BetMGM said the fight between the YouTube star and the 58-year-old Tyson, who showed his age by being a sitting target, was its most-bet boxing or mixed-martial arts fight. Craig Mucklow, vice president of trading at Caesars Sportsbook, said the fight was on par with an NFL Monday night game.