Pittsburgh Steelers WR DK Metcalf (rest), CB Joey Porter Jr. (hamstring), S DeShon Elliott (knee), LB Alex Highsmith (ankle), and OT Max Scharping (knee) did not practice on Thursday, Sept. 18. DT Derrick Harmon (knee) was limited in practice. LB T.J. Watt (rest), CB Darius Slay (rest) and LB Patrick Queen (oblique) practiced in full.
Steelers.com