10. Matt Birk, Baltimore Ravens
Birk possesses average to good agility. As he ages, his lack of agility becomes more of an issue.
An incredibly smart center who combines a great football IQ with a decade of experience. Birk is rarely out of position and rarely makes the wrong call.
Pass Block, Speed8.5
Has the ability and quickness to snap and then raise up to stop a nose tackle, or to help with a 3-tech. Quick off the ball. Very consistent hand placement.
Pass Block, Power8
Big, strong hands that produce a quick, efficient punch. Has a good anchor and can handle a nose tackle on his own. Great awareness.
Is quick off the snap and gets a hold of the defender quickly. Has the strength to turn the defender and then drive him away from the ball. Average lateral agility.
Move in Space5
Limited in space due to age and stiffness. Isn't asked to get out on screens or lead-block often.
Can deliver a big-time pop when his technique and balance are on point. Can send a linebacker airborne when picking up a blitz. Strong player up top with good drive power from his base.
Picked up four penalties, which is about average. Is a near-flawless blocker. Might try to pancake too often and can reach when beat on the outside.
Ideal size at 6'5" and 308 lbs.
Started every game in 2011.
One of the best against the pass, his lack of agility and mobility hurts in the run game. The Ravens can hide him though, with two Pro Bowl-caliber guards.