
Oh, so now we are only using the past 3 years.... wonder why.
Because the past three years are more predictive of this year's performance than four, five, or six years ago, perhaps? To be honest, I take every player on a case-by-case basis, but I always weight most heavily the three most recent seasons, because they have the best predictive value. Now, you can argue that all you want, but here are some indisputable facts.*Four years ago, Marvin Harrison had an NFL record-setting season.
*When a player sets a single-season record, the overwhelming majority of the time that is a career year that is never duplicated.
*Marvin Harrison's receptions have decreased every single season for 3 straight years now.
*Reggie Wayne's receptions and role in the offense has INCREASED every single season for 4 straight years now.
As a result of THESE facts, I would probably make a judgement call that going back four years would probably not give a very accurate representation of Marvin Harrison's prospects for this season. You can feel free to agree or disagree, but that's where I stand on the matter. I don't know why Shreks used the last 3 years, but if I were running the numbers, those are the reasons why *I* would have used the last 3 seasons.