Mike Tyson stepped onto a spotlighted stage Friday and weighed in at 220 pounds, ripping off his shirt to reveal a muscled torso that could belong to an athlete of half his 54 years. The former heavyweight champion moved into a COVID-protective glass box and went nose-to-nose with Roy Jones Jr., once the most talented fighter in the world. Jones' 210-pound frame was slightly less toned, but still clearly in better condition than most of his fellow 51-year-olds. These two boxing greats are older, calmer men now, but they're returning to the ring Saturday night intending to recapture a moment of their brilliant past - and they've both worked very hard to make sure they won't be embarrassed in this extraordinary boxing exhibition. Their fight at Staples Center is an eight-round sparring session of sorts. It will have two-minute rounds, no official judging and limited violence.