"Why am I going to call the defense? Because I'm good at it and I'm confident in it," OU coach Brent Venables said in March.

It's back to school for the Chicago Bears. Although, defensive coordinator Dennis Allen had a glass-half-empty view on Day 1.

Here's an in-depth look at Arkansas' defensive line as the team goes through the eight-week summer training cycle ahead of fall camp in August.

Training camp has arrived in Atlanta, as the pressure begins to intensify, with a revamped defense seeking difference makers ...