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, according to NFL Media, which makes him a candidate to begin the season on injured reserve.

Pittsburgh Steelers rookie Derrick Harmon has avoided a serious injury after his knee bent awkwardly during a preseason game against Carolina.

Pittsburgh Steelers defensive tackle Derrick Harmon knows he dodged a bullet but is "definitely frustrated" suffering a reported MCL sprain in Thursday's 19-10 win over the Carolina Panthers.