ENGLEWOOD, Colo. -- Wes Welker won't play Thursday night against San Diego as he recovers from his second concussion in less than a month.
Broncos coach John Fox officially ruled him out Wednesday.
The NFL's protocol for concussed players would have allowed Welker only to participate in light practice Thursday and only if he had passed baseline cognitive tests earlier in the week. For competitive purposes, Fox had been coy about Welker's status during the week, other than to say the receiver's health was the team's top priority.
Fox also said defensive tackle Derek Wolfe (illness) would miss his third straight game when the Broncos (11-2) host the Chargers (6-7)
Welker was going low to catch a pass Sunday when Tennessee safety George Wilson legally hit him in the side of his neck, knocking him from the game.
Welker also sustained a concussion Nov. 17 against Kansas City but played the following week at New England.
Jones-Drew wants to stay
JACKSONVILLE, Fla. -- The Jacksonville Jaguars want running back Maurice Jones-Drew back next season.
Jones-Drew is doing all he can to make it happen.
He's sharing carries, playing through injuries and complaining about nothing. He's all in, fully committed to what's happening in Jacksonville under coach Gus Bradley, general manager Dave Caldwell and owner Shad Khan.
Jones-Drew says, "I want to be here. It's a fun environment. It's different than I've ever been a part of. It works. It takes time to build anything. It's starting to turn around for us, and we're starting to play well. That's exciting."
It also might keep Jones-Drew from testing the free-agent market.
Jones-Drew has three games remaining on a five-year, $31 million contract he signed in 2009. He's earning $4.95 million this season.
Palmer's elbow still sore
TEMPE, Ariz. -- Carson Palmer didn't throw a pass in practice last week, then had one of the best passing games of his career.
The Arizona quarterback won't try that this week.
Palmer said before practice Wednesday that he planned to throw some in preparation for the Cardinals' game at Tennessee on Sunday.
Last Sunday, despite a sore elbow that had made him questionable for the game, Palmer completed 27 of 32 passes in Arizona's 30-10 victory over St. Louis. The 84.4 completion percentage was the highest of his career and second-highest in franchise history.
The only Cardinal to do better was Kurt Warner, who completed an NFL-record 92.3 per cent -- 24 of 26 -- against Jacksonville in 2009.
-- The Associated Press