I know that some organization called PFF grades each player,,,,how is that done?? Do they have an objective set of criteria? Or is it all subjective??? Do they take into account the quality of the opponent? What does a -11.3 mean exactly. Sorry to sound so stupid.
Can someone explain how they watch ,,,say a left tackle and grade him??? Are all numbers comparable? What is a great score? and a terrible score? is zero an average score.
Thanks