The Boxing Rant returns to preview Errol Spence vs. Shawn Porter as two welterweight champions look to unify the division. Anthony Dirrell and David Benavidez meet in the co-feature in a super-middleweight title clash. Plus, Kenny and Vin discuss Manny Pacquiao's next opponent, the expired milk that is Amir Khan vs. Kell Brook, and of course Keith Thurman's arthritic knuckle.