We know right tackle Jared Gaither is out against the Redskins. The statuses of his replacement, Oniel Cousins, and center Matt Birk are unclear. Tony Moll and Chris Chester, respectively, would take their spots with the starters if they do not dress. With those key pieces out, the linemen still standing must get in sync to ensure that one of their quarterbacks doesn't get killed in preseason play. I'll be watching to see if the Ravens offensive line can make positives strides -- and lower the panic level -- against a respectable Redskins pass rush.