Gervonta Davis vs. Mario Barrios: Fight prediction, undercard, odds, start time, preview, expert picks

'Tank' looks to earn a title in a third weight class when he moves up to 140 pounds on Saturday night in Atlanta

For all of the talk as to whether two-division titleholder Gervonta Davis might be biting off more than he can chew by moving up two weight classes from his last fight to challenge unbeaten 140-pound titleholder Mario Barrios in Saturday's pay-per-view bout, the rising star known simply as "Tank" begs to differ.   "I think [Barrios] is making a mistake," Davis said during Thursday's final press conference. "It's not just the height. He thinks he's stronger than me, so we are just going to have to wait and see. If he believes that I've never seen anyone like him, then so be it. But they always learn on fight night. That's when the real me comes out."  Davis (24-0, 23 KOs) has used the threat of his tremendous punching power to consistently back opponents up and draw fans to arenas at an impressive pace. But the 26-year-old star of the Mayweather Promotions banner will be giving up nearly six inches in height and the wiry and aggressive Barrios (26-0, 17 KOs), a native of San Antonio, who won the vacant WBA "regular" junior welterweight title by twice dropping unbeaten Batyr Akhmedov in a 2019 unanimous decision.