By Lem Satterfield Gervonta Davis is an unbeaten pay-per-view star, a three-division and five-time champion and perhaps the premier knockout specialist in the sport. And if you ask two-time welterweight champion Shawn Porter, 'Tank Davis' is 'the best fighter at 130, 135 and 140' pounds. 'We just finished five rounds of sparring with Tank Davis. […]
