Beyond the top four, this is one of the most difficult groups to sort, in part because none of the players have asserted themselves as must-keeps. Perriman has outproduced the rookies, Scott and Lasley, but do the Ravens really want another go-round with the former first-round draft pick, who brings little value on special teams? We’d normally presume Scott to be safe because he was a fourth-round pick, but he’s done little to secure a spot. Lasley has made more impressive plays, but drops too many passes. Grant and White have been the top options at kick returner, but they both fumbled Monday. The last two preseason games could make a big difference here.