The rookie safety lacks ideal size and speed, running in the 4.7 range last spring as he went undrafted out of Marshall. However, Brown's instincts and timing, along with injuries to veterans Emanuel Cook (broken right leg, out for the season) and Sean Considine (concussions), have created an opportunity. He leads the Ravens with three fumble recoveries and also has one interception. Fourth-round pick Christian Thompson is assured of a job at safety, but Brown needs to keep it up as he likely starts this game. The Ravens could also pursue free agent safeties and have been fielding exploratory calls since Cook and Considine got hurt. Reserve cornerback Corey Graham can also play safety, further clouding the outlook for Brown.Baltimore Sun photo by Gene Sweeney Jr.