Steelers' Bruce Gradkowski: Will miss a number of weeks

Gradkowski, who is dealing with a left hamstring injury, is going to be out for "a number of weeks," per coach Mike Tomlin, the Pittsburgh Post-Gazette reports.

The veteran QB could miss the rest of the preseason. In Gradkowski's absence, Dustin Vaughan figures to see added practice reps behind Ben Roethlisberger and Landry Jones.