After Pittsburgh Steelers rookie defensive tackle Derrick Harmon was carted off the field with a knee injury in Thursday's preseason win at Carolina, it appears he avoided the worst-case scenario. Harmon sustained an MCL sprain and will be sidelined four to six weeks,

Pittsburgh Steelers first-round pick Derrick Harmon has sustained a medial collateral ligament (MCL) sprain and is expected to be sidelined, sources confirmed to ESPN.

When Steelers defensive tackle Derrick Harmon appeared to twist his knee during Pittsburgh's 19–10 exhibition win over the Panthers Thursday, the team's fans presumably feared the worst. However, Harmon seems to have avoided a doomsday scenario.