Day 1 Breakdown: Defensive Tackles.

The NFL is of a cyclical nature. The 3-4 was a system left for dead not more than five years ago. And now? You are seeing a return of the 3-4 as a mack defense. And who's leading the charge? Boston College.1. B.J. Raji (NT-Boston College)6'2" 337 5.12There is only one word you need to know when you talk about B.J. Raji. Power. He has an explosive first step. He has the leverage and balance to be immovable on his best days. He is a top notch run-stuffer.But he brings nothing to the table as a pass-rusher despite his 2008 sack total. It's simply straight-line power. He is also a big dude, and the motor does wear itself down. And while the character questions seem to have been somewhat answered, someone who misses a year due to academics just might not be the plug and player that his Top-10 status belies.But that being said? He was great in 2006 and did not miss a beat in 2008. He is a game changer for at least two downs. Mention any Williams surnamed defensive tackle?...