New York Giants middle linebacker Chase Blackburn will miss Sunday's game against the Pittsburgh Steelers with a hamstring injury.
The team's leading tackler, Blackburn was hurt Sunday in a 29-24 win over Dallas. Blackburn did not practice this week and was listed as out on Friday.
Now second-year pro Mark Herzlich is in line to make his third career start.
Giants linebacker Jacquian Williams will miss his third straight game with a knee injury.
Safety Antrel Rolle (concussion) is being listed as probable along with center David Baas (ankle-elbow), defensive tackle Rocky Bernard (quadriceps) and receiver Victor Cruz (calf), running back Ahmad Bradshaw (foot), tight end Bear Pascoe (ankle) and safety Kenny Phillips (knee) are questionable.
Linebacker Keith Rives is doubtful with a calf injury.