NFL insider Ian Rapoport reported on Friday, citing sources, that Harmon suffered a MCL sprain during Thursday's preseason ...

Green Bay Packers right tackle Brian Bulaga sprained the MCL in his left knee during the Packers' season-opening 36-16 loss to the Seattle Seahawks, a source told ESPN NFL Insider Adam Schefter.

Steelers quarterback Ben Roethlisberger suffered a sprained MCL in his left knee in Sunday's win at St. Louis and will miss four to six weeks as he recovers, a source said.

Steelers first-round pick Derrick Harmon said Saturday he initially feared the MCL sprain that took him out of the preseason ...