Defensive lineman Derrick Harmon suffered a sprained knee in Thursday's preseason game and here's what it could mean for the Steelers.

Should first-round pick Derrick Harmon miss the beginning of the regular season due to injury, another rookie could start in his place.

Pittsburgh Steelers first-round pick Derrick Harmon was carted off the field during Thursday's preseason game against the Carolina Panthers after sustaining a knee sprain. Harmon is expected to be out for about a month,