FLOWERY BRANCH, Ga. - The Atlanta Falcons on Tuesday signed former Eagles linebackers Jamar Chaney and Omar Gaither.
The Falcons lost linebacker Sean Weatherspoon for at least eight weeks with a foot injury sustained in Sunday's win over St. Louis.
Replacing Weatherspoon is particularly troublesome because linebacker is the team's thinnest position. There were only four other linebackers on the roster, including two undrafted rookies, before the Falcons signed Chaney and Gaither.
Head coach Mike Smith said the two undrafted rookies, Joplo Bartu and Paul Worrilow, will play significant roles. Bartu started ahead of Stephen Nicholas against the Rams.
Chaney, a seventh-round pick by the Eagles in 2010, played 44 games with them over the last three seasons, including 23 starts. Gaither also is a former Eagles draft pick, spending five years in Philadelphia before moving to Carolina in 2011 and Oakland last season. He played in seven games with four starts for the Raiders.
Smith also announced that running back Steven Jackson will miss Sunday's game at Miami with a thigh injury.
"He will not play this week. I know that," Smith said. "It is short term. When I say short term, I don't know if it's two weeks or three weeks, but Steven is ruled out for the game this week and will not play."
Titans: Greene undergoes right knee surgery
NASHVILLE, Tenn. - Tennessee Titans coach Mike Munchak says running back Shonn Greene has had arthroscopic surgery on his right knee.
Munchak announced Tuesday night on his weekly radio show that Greene had surgery Monday.
Greene hurt his knee in the 16-9 opening win at Pittsburgh. Munchak says Greene was able to run last week, got treatment and thought he would play Sunday against San Diego.
Munchak says Greene will be on a week-to-week basis and that the Titans should have the running back strong for the rest of the season.
The Titans signed Greene to a three-year contract in March to provide a power complement for Chris Johnson. Greene has four carries for 18 yards.
Cowboys: Dallas releases Cohen, adds Carter
IRVING, Texas -- The Dallas Cowboys have released defensive tackle Landon Cohen and replaced him with David Carter.
Carter was added by the Cowboys on Tuesday, a little more than two weeks after the Arizona Cardinals released him at the end of the preseason.
He was a sixth-round pick by Arizona in 2011. Carter has played in 32 games with four starts, recording 18 tackles and a sack.
Cohen signed with Dallas early in training camp and played in both regular-season games, getting one tackle and one pressure.
The Cowboys also released receiver Danny Coale from their practice squad and replaced him with receiver Jamar Newsome, who has played in eight games with Jacksonville and Kansas City.