Another dominant welterweight title defense for Kamaru Usman leaves DC & Helwani wondering where “The Nigerian Nightmare” ranks among the greatest fighters of past and present. Plus, the guys discuss the “gift” Usman gave Jorge Masvidal postfight (16:18), who Leon Edwards must fight next month (39:44), Alexa Grasso’s boxing and what’s at stake for Saturday’s Curtis Blaydes vs. Derrick Lewis bout (49:37).