Renowned trainer Ronnie Shields joins The PBC Podcast and gives updates on Jermall Charlo, David Morrell Jr. and much more. Plus, hosts Kenneth Bouhairie and Michael Rosenthal break down Saturday night’s entire stacked FOX Sports PBC pay-per-view featuring Keith Thurman against Mario Barrios in what promises to be an explosive main event. Also, a look back at some of the greatest career comebacks in boxing history.