Steelers first-round pick David DeCastro has a torn medial collateral ligament and will undergo an MRI on Sunday around lunchtime to determine whether he tore his anterior cruciate ligament, a high-level team source to ESPN NFL Insider Adam Schefter.
A torn MCL means DeCastro could return midway through the season. But, if DeCastro tore his ACL and MCL ligaments, Pittsburgh’s starting right guard would be lost for the season.
According to Schefter, the Steelers are hopeful that the MRI won’t reveal a torn ACL because doctors did not detect that on Saturday night. Ramon Foster, who started at right guard, would replace DeCastro on the offensive line.