Star linebacker Khalil Mack is missing his second straight game for Chicago Bears, who will face turnover-prone Nathan Peterman after the Buffalo Bills ruled out quarterback Derek Anderson because of a concussion.
Mack was out Sunday with an injured right ankle. He went into Week 9 leading the Bears with five sacks and was tied for the NFL lead with four forced fumbles. Mack missed out on a happy homecoming of sorts after playing at the University at Buffalo. Chicago receiver Allen Robinson is also missing his second straight game with a groin injury.
Buffalo is without rookie starting middle linebacker Tremaine Edmunds, who is also out with a concussion, and defensive end Trent Murphy (knee).
Here's a list of inactive players for Sunday's early NFL game:
Bears: LB Khalil Mack, WRs Allen Robinson II and Kevin white, DB Marcus Cooper, OL Rashaad Coward, TE Ben Braunecker and DT Bilal Nichols.
Bills: QBs Josh Allen and Derek Anderson, LB Tremaine Edmunds, DE Trent Murphy, OLs Ike Boettger and Conor McDermott and WR Cam Phillips.