Heavier DL part of DC Del Rio's plan

The first-team DTs for most of 2011 averaged 311 pounds. The two DTs on the first team during organized team activities -- newcomers Justin Bannan and Sealver Siliga -- average 10 pounds more, the product of DC Jack Del Rio's desire for more bulk up front. "It's going to allow our linebackers to roam free, and Del Rio wants his linebackers to go downfield and make plays," said LB Wesley Woodyard.