PITTSBURGH - The Pittsburgh Steelers showed flashes of brilliance on both sides of the ball in a 38-7 preseason romp over Buffalo on Saturday night, though it came at a significant cost.
Rookie offensive guard David DeCastro had to be taken off the field on a cart with what coach Mike Tomlin called a "potentially severe" right knee injury. DeCastro was scheduled to undergo an MRI on Sunday.
The results were not immediately available, though the Steelers said Saturday night they expected DeCastro to miss a significant amount of time.
ESPN.COM reported Sunday night that the top draft pick out of Stanford dislocated his knee cap, tore his medial collateral ligament and suffered some damage to his patellar tendon, according to NFL Insider Adam Schefter.
DeCastro's anterior cruciate ligament is intact, but the Steelers are unsure whether he'll return this year after the results of the MRI.
The injury marred Pittsburgh's best game of the preseason. Quarterback Ben Roethlisberger passed for 169 yards and a touchdown and led a 98-yard scoring drive in the final seconds of the first half.
Ramon Foster, who was with the Steelers last season, replaced DeCastro at guard in the lineup after the injury
The Steelers (2-1) wrap up the exhibition schedule on Thursday against Carolina (1-1).