Rookie right guard David DeCastro of Pittsburgh Steelers hurts knee against Buffalo Bills - ESPN " ORCHARD PARK, N.Y. -- Steelers rookie right guard David DeCastro was carted off the field after hurting his right knee early into Pittsburgh's 38-7 win over the Buffalo Bills on Saturday night. DeCastro did not return after he was hurt while pass blocking as Pittsburgh faced third-and-8 at its 6-yard line on its second possession. DeCastro's right leg twisted beneath him after being bowled over by defensive tackle Marcell Dareus. After the game, head coach Mike Tomlin called DeCastro's injury "potentially severe." DeCastro is scheduled for an MRI on Sunday. DeCastro lay in the end zone for a few minutes as trainers worked on his leg. He briefly got up on his own, but was unable to put any weight on his right leg. He took a few hops before trainers stopped him and called for a cart." Always hate seeing things like this. I know a lot of Pats fans really liked DeCastro pre-draft as a potential Pat.