PITTSBURGH (KDKA/AP) – Rookie right guard David DeCastro was injured in Saturday night’s 38-7 preseason victory over the Buffalo Bills and the prognosis is not good.

There were conflicting reports by national networks Sunday as to the extent of the injury.

According to an ESPN report, DeCastro tore his medial collateral ligament, dislocated his knee cap and suffered other damage to his patellar tendon.

However, his anterior cruciate ligament was not damaged.

But the NFL Network reports DeCastro injured both his ACL and MCL.

DeCastro 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.

DeCastro, the 24th overall selection out of Stanford who started Saturday’s game over Ramon Foster, 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.

Defensive end Brett Keisel hurt his left ankle late in the first quarter and did not return as well.

Pittsburgh’s defensive line is already depleted with defensive tackle Casey Hampton sitting out his third preseason game while coming off right knee surgery. Hampton is practicing with the team after being activated off the physically-unable-to-perform list on Aug. 17.


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