Originally written on Rumors and Rants  |  Last updated 11/17/14

The Pittsburgh Steelers got awful news Saturday night as rookie right guard David DeCastro left the team’s 38-7 preseason win over the Buffalo Bills with a potentially severe right knee injury.

The Stanford product was hurt while pass protecting during Pittsburgh’s second possession. His right leg was twisted beneath him as he was knocked over by Bills defensive tackle Marcell Dareus.

Entering the 2012 NFL Draft, I had DeCastro graded out as one of the top seven players in the entire class. He fell to the Steelers with the 24th pick in the first round and it appeared he had already won the starting right guard spot. He has the potential to be one of the best guards in the NFL immediately and certainly has Pro Bowl potential.

Now NFL.com is now reporting that DeCastro has damage in both his right ACL and MCL and will certainly be out “a while.”

Speculation is that he has a torn ACL. If DeCastro’s injury is as bad as feared, he’ll likely miss the entire season.

That would be a serious blow to the Steelers, who are trying to rebuild their offensive line. Ramon Foster will likely move up to play right guard, with Willie Colon staying on the left side.

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