Derrick Harmon Injury: MCL sprain confirmed

Harmon is expected to be out 4-to-6 weeks with an MCL sprain, Gerry Dulac of the Pittsburgh Post-Gazette reports.

Because Harmon picked up the injury during Pittsburgh's final preseason game at Carolina, there's optimism that he may have to miss only two or three regular-season games. As a result, it's not anticipated that he'll be placed on the Steelers' injured reserve list. Once available, he projects to play a significant role on Pittsburgh's defensive line alongside Cameron Heyward and Keeanu Benton.