Light used to stop good rushers only with a TE (usually Grahambo) helping him out. Now he does so much more often w/o TE help. Is Mankins making a major difference in the pass blocking? And in something that's even harder to judge -- is Mankins helping Koppen significantly as well. Just looking at how they play, Mankins looks like a solid Pro Bowler, Light doesn't, and Koppen is kind of iffy. Hence the questions.