Well, perhaps the Ravens do know more than they're letting on. It appears that they have just traded a late fourth round pick to the Oakland Raiders for CB Fabian Washington, a former first round selection of the Raiders in 2005. Washington had four interceptions in 2006 but only one last year, in addition to 40 tackles. He'll probably step in immediately as nickle back and perhaps even take over for Samari Rolle in the event of injury or lack of performance.
The Ravens first fourth round selection was Marcus Smith, WR from New Mexico. According to the ESPN experts, he is a former running back with blazing speed and should be on special teams and have a shot at the slot receiver sets that the Ravens run.
With their final pick in the fourth round, the Ravens took OT David Hale from Weber State. Hale is a huge man, standing over 6'5" and weighing in at 314 pounds. If he's teach-able, he could be a good addition to the line as a reserve or who knows?