In today's Buy or Sell, Bill answered if the Knicks will upgrade at head coach, if Stefon Diggs is right for his non-answer about his boat trip, if Jordon Hudson won't be a distraction for UNC moving forward, if Pacers will win Game 3 at home, if Shemar Stewart is right for holding out of Bengals practice and if Shohei Ohtani will return to the mound before the all-star break.