Look at things in different ways

To begin with, Polian seems to misunderstand what being undervalued means in this context.  Polian seems to think that since there is no real “middle class” in the NFL because the pay levels are so high, no players are undervalued.  Instead, as in Moneyball, good analytical analysis can identify players that cost less than their intrinsic value because the common metrics used to evaluate their performance don’t suggest what they should really be worth.
While it remains to be seen how effective analytics can be in a football context, there is very good reason to believe that remaining skeptical of conventional football wisdom and trying to look at things differently can indeed work.