Real or Not: Is Jermell Charlo poised to move up? Will Pacquiao be Spence's toughest challenge?

How will this weekend's undisputed title fight shape the junior middleweight division moving forward?

source https://www.espn.com/boxing/story/_/id/31806698/will-jermell-charlo-move-brian-castano-fight-manny-pacquiao-errol-spence-toughest-challenge