It can’t be underestimated just how comforting it can be for a manager to motion to the bullpen a tight game, signal to bring his closer, and know they’ll put a game on ice. When the lights dim and the fire graphics appear on the screens at Citizens Bank Park, that’s the exact feeling the Philadelphia Phillies interim manager, Don Mattingly, likely feels sitting in the dugout right now, because Jhoan Duran has arguably been one of the best closers in all of baseball so far this season.