re: Why do our DB's play without looking....

I've had this debate with my dad. I think it must be something they're taught. I'm guessing the thought is that by turning around you risk the ball zipping right past you and giving up not only the completion but long run after the catch. By facing the WR, the DB can try to rake the ball out of the WR's hands. The problem is anytime the ball is slightly underthrown, there's going to be automatic PI as the DB makes contact with the slowing WR.