NFL Briefs PROSISE DONE FOR SEASON

SEATTLE» C.J. Prosise’s ankle injury will end the running back’s second season with the Seahawks.

The team placed Prosise on injured reserve Tuesday and promoted running back Mike Davis from the practice squad.

The Seahawks also announced their signing of Byron Maxwell, a former Seattle starter whose return to the team adds cornerback depth in the wake of Richard Sherman’s season-ending Achilles injury. Sherman was placed on IR.

Samuel hurts ankle.

Panthers rookie receiver Curtis Samuel is out for the season after suffering ligament damage in his left ankle during Monday night’s win against Miami.

The second-round pick will have surgery on the ankle, but no date has yet been set for the procedure.

Officer defends decision.

The NFL’s chief medical officer is defending the Colts’ treatment of quarterback Jacoby Brissett, who was allowed to return to Sunday’s game against the Steelers after a hit to the back of his head.

Brissett was placed into the concussion protocol when he reported symptoms after the game.

“All of our protocols were followed,” Dr. Allen Sills said. Sills added Brissett “had no symptoms” and there were “no findings” during the game to prevent him from returning to play.

Kelley, Compton out.

The Redskins lost two more starters for the season. They placed running back Rob Kelley and linebacker Will Compton on injured reserve.

Kelley suffered a high ankle sprain and also sprained his left MCL, and Compton suffered a Lisfranc sprain.

Jones won’t back down.

Cowboys owner and general manager Jerry Jones said he will not back off the threat of suing the NFL and several owners if the compensation committee comes to an agreement with commissioner Roger Goodell on an extension.

Jones was removed as an ad hoc member of the committee when he brought up the possibility of legal action. Goodell’s contract is set to expire after the 2018 season.