Plan B: The Bears experimented with options during exhibition games. They began with veteran tackle Tom Compton at left guard (it would have been Kush, but he tore a hamstring in camp). Then they plugged in center Hroniss Grasu and moved second-year pro Cody Whitehair to left guard. While Grasu continues to strive for a more consistent anchor at the point of attack, the four first-string linemen went through drills Thursday at Soldier Field with Whitehair at center. What that means, we'll see.