ORCHARD PARK, N.Y. — The Buffalo Bills' depth at running back could be further depleted after tests revealed rookie Karlos Williams sustained a concussion.
General manager Doug Whaley revealed Williams' injury Tuesday during his radio show on Buffalo's WGR-AM. Whaley says tests showed the concussion on Monday, a day after Williams complained of not feeling well following a 24-10 loss to the New York Giants.
Williams is following the NFL's concussion protocol, and must pass a series of tests before being cleared to play. Buffalo (2-2) plays at Tennessee (1-2) on Sunday.
Williams was hurt after making his first start filling in for LeSean McCoy, who is out indefinitely because of a hamstring injury.
The Bills have only two other running backs on their roster, Boobie Dixon and Cierre Wood, plus fullback Jerome Felton.
Browns: NFL looking into Joe Haden's late scratch
BEREA, Ohio — The NFL has asked the Browns why Pro Bowl cornerback Joe Haden was inactive for Sunday's game against San Diego after being listed as probable on the team's injury report.
Haden sat out with a broken right ring finger, an injury he sustained a week earlier against Oakland. Haden also hurt his ribs but was able to practice on a limited basis all week and was down as probable — a 75 percent chance of playing — on the week's final injury report.
NFL
However, after testing his hand during a pregame workout, Haden decided not to play. Browns coach Mike Pettine said Monday that "we left it up to Joe, and he made the decision that he didn't want to go."
A league spokesman says it's customary to check with teams when these instances occur. The Browns are required to submit a written explanation for Haden's absence.