Editor's Update: Adam Schefter is reporting DeCastro tore his MCL, dislocated his knee cap and suffered damage to his patellar tendon, but ACL is intact.
Pittsburgh Steelers right guard David DeCastro could be out for the season after suffering torn MCL in his right knee during Saturday's preseason game against the Buffalo Bills, according to reports. He is set to undergo an MRI on Sunday. If tests show that he has torn his ACL as well, the Steelers will be without the rookie for all of the 2012 season.
Analysis: An already shaky Steelers' running game took a major hit when DeCastro went down early in the game. Isaac Redman and Rashard Mendenhall are both risky picks come draft day, as they are both banged up and it is still unknown how carries will be split when Mendenhall is ready to return to the field. The Steelers also drafted Mike Adams out of Ohio State to help shore up the line, but both rookies have been somewhat disappointing in camp so far.