Nate Herbig

Steelers C Nate Herbig (shoulder) is expected to miss “an extended period of time.”

The report comes from the Pittsburgh Post-Gazette’s Gerry Dulac. Herbig’s injury elevates second-round rookie Zach Frazier to the starting role. Among 39 Power Five centers with at least 800 offensive snaps last year, Frazier ranks top 12 in both pass protection (83.8 PFF pass-blocking grade) and run blocking (74.8 PFF run-blocking grade) per PFF.