Bills vs Broncos is the game under review, so we get a pretty positive look at the five starters for week 16. Between Buddy Nix's track record of finding capable starters, the very fine gifts of Levitre and Wood from the last regime, and the great job of coaching, there is reason to be positive about this unit going forward. There's one thing that I believe is overlooked a bit when looking for the reasons the O-line has had it's success. Chan Gailey's system uses quite a bit of pulling assignments. I think it really helps keep the D honest when they are trying to avoid potential blockers from both straight ahead and from a lateral position. Pulling linemen are used at high school and college levels more often than pro units (at least from my experience,) and I think it's helping the Bills offense to use this technique as much as possible. I was unable to find numbers to compare the % of pulling linemen between teams, so if anyone knows where this info can be found, please comment.