The Pittsburgh Steelers signed defensive end Brett Keisel to a five-year extension.

The San Diego Chargers signed wide receiver Demetrius Byrd.

The Cincinnati Bengals signed tackle Andre Smith.

The Houston Texans signed cornerback Cletis Gordon.

The Detroit Lions signed linebacker Rufus Alexander.

The Detroit Lions claimed wide receiver Glenn Holt from waivers.

The Dallas Cowboys signed linebacker Tearrius George.

The New York Jets acquired punter Glenn Pakulak from waivers.

The Dallas Cowboys signed guard Duke Preston.

The Denver Broncos signed quarterback Ingle Martin; waived running back Marcus Thigpen.

The Jacksonville Jaguars signed defensive tackle Jervonte Jackson; waived defensive lineman Jeremy Mincey.

The New England Patriots signed wide receiver Robert Ortiz.

The New York Jets waived offensive tackle Tavita Thompson.

The Atlanta Falcons released linebacker Edmond Miles.

The Chicago Bears signed linebacker Darrell McClover; waived tight end Fontel Mines and guard Tyler Reed.

The Cleveland Browns signed defensive lineman Brian Schaefering; waived wide receiver Paul Raymond.

The Denver Broncos waived tackle Stanley Bryant.

The Jacksonville Jaguars signed tight end Ernest Wilford; waived defensive tackle Jonathan Lewis.

The New England Patriots traded offensive lineman Russ Hochstein to the Denver Broncos for an undisclosed draft choice; signed linebacker Tyrone McKenzie; released safety Tank Williams.

The Kansas City Chiefs waived linebacker Vince Redd; acquired offensive linemen Andy Alleman and Ikechuku Ndukwe from the Miami Dolphins for an undisclosed selection in the 2010 NFL Draft; waived center Brian De La Puente.

The Tampa Bay Buccaneers signed cornerback Darrell Hunter and linebacker Bo Ruud.

The New England Patriots released tight end Tyson DeVree.

The Buffalo Bills signed defensive end Aaron Maybin.

The New York Jets re-signed quarterback Chris Pizzotti.

The New York Jets waived guard Dennis Conley.

The Buffalo Bills signed linebacker Solomon Elimimian; waived long snapper Ryan Neill.

The Indianapolis Colts released offensive tackle Corey Hilliard.

The Miami Dolphins terminated the contract of cornerback Eric Green.

The New York Jets signed safety Nate Ness.

The Oakland Raiders waived running back Lorenzo Neal; signed safety Rashad Baker.

The Tampa Bay Buccaneers signed safety Steve Cargile; waived safety C.J. Byrd and wide receiver Joel Filani; released cornerback Mike Hawkins.

The Philadelphia Eagles signed safety Brandon Harrison; released safety Rashad Baker.

The New England Patriots signed safety Roderick Rogers.

The Cleveland Browns claimed wide receiver Paul Raymond off waivers from the New York Jets; waived linebacker Bo Ruud.

The Kansas City Chiefs signed free agent wide receiver Ashley Lelie.

The New England Patriots signed running back Chris Taylor; traded defensive lineman Le Kevin Smith to the Denver Broncos for an undisclosed draft pick.

The New York Jets waived safety Keith Fitzhug.

The Tampa Bay Buccaneers signed wide receiver Marcus Maxwell.

The Cincinnati Bengals signed tight ends J.P. Foschi and Kolo Kapanui.

The Dallas Cowboys waived cornerback Mike Hawkins and running back Alonzo Coleman.

The Denver Broncos waived guard Pat Murray.

The Detroit Lions signed guard Terrence Metcalf and wide receiver Dane Looker; waived tackle Kirk Barton and wide receiver Bobby Sippio.

The New York Jets re-signed wide receiver Huey Whittaker.

The Philadelphia Eagles signed quarterback Michael Vick.

The Kansas City Chiefs signed long snapper Thomas Gafford.

The Tampa Bay Buccaneers signed punter Dirk Johnson; waived defensive tackle Greg Peterson.

The Buffalo Bills waived defensive back Dustin Fox.

The New York Jets signed Kicker Parker Douglass; waived wide receiver Huey Whittaker.

The Philadelphia Eagles signed quarterback Adam DiMichele.

The Buffalo Bills signed offensive lineman Christian Gaddis and defensive back Antwain Spann; waived defensive end Jermaine McGhee and center Marvin Philip.

The Chicago Bears signed long snapper J.J. Milan.

The Cleveland Browns signed wide receiver Edward Williams; waived wide receiver Syndrick Steptoe.

The Jacksonville Jaguars signed running back Josh Vaughan; waived center Drew Miller.

The Miami Dolphins signed tight end Joe Kowalewski.

The Cincinnati Bengals released running backs Kenny Watson and J.D. Runnels.

The Miami Dolphins signed kicker Connor Barth.

The New Orleans Saints signed cornerback Malcolm Jenkins to a five-year contract.

The Philadelphia Eagles signed quarterback Matt Nagy; release wide receiver Brandon Robinson.

The Pittsburgh Steelers signed center Alex Stepanovich; released defensive lineman Jordan Reffett.

The St. Louis Rams signed safety Mark Rubin.

The Atlanta Falcons released wide receiver Darren Mougey.

The Cleveland Browns signed offensive lineman Fred Weary.

The St. Louis Rams waived safety Eric Bassey.

The Atlanta Falcons agreed to terms with wide receiver Roddy White on a contract extension.

The Cleveland Browns released defensive end Shaun Smith.

The Detroit Lions signed wide receiver Bobby Sippio.

The Philadelphia Eagles signed tight end Rob Myers; released punter Ken Parrish.

The Seattle Seahawks signed linebacker Aaron Curry to a six-year contract; released wide receiver Billy McMullen.

The Buffalo Bills signed defensive end Ataefiok Etukeren; released safety Antwain Spann.

The Jacksonville Jaguars signed center Drew Miller; waived linebacker David Holloway.

The Kansas City Chiefs signed defensive end Tyson Jackson.

The Tampa Bay Buccaneers signed wide receiver Mario Urrutia; released running back Josh Vaughan.

The Buffalo Bills signed defensive tackle Derrick Jones.

The Chicago Bears signed center Donovan Raiola.

The Cleveland Browns signed defensive back Brandon Anderson; waived defensive back Don Carey.

The Houston Texans signed cornerback Deltha O'Neal and running back Andre Hall; released defensive tackle Jake Visser; waived running back Jeremiah Johnson.

The Kansas City Chiefs claimed quarterback Matt Gutierrez off waivers.

The New England Patriots acquired defensive end Derrick Burgess from the Oakland Raiders for offensive lineman Al Johnson.

The Baltimore Ravens signed defensive lineman Nader Abdallah.

The Kansas City Chiefs waived quarterback Ingle Martin.

The New York Jets claimed wide receiver Aundrae Allison off waivers from Minnesota Vikings; waived wide receiver Mario Urrutia.

The Seattle Seahawks signed linebacker Shane Simmons; waived linebacker Tony Taylor.

The Atlanta Falcons signed free agent wide receiver Dicky Lyons.

The Jacksonville Jaguars signed free agent linebacker David Holloway.

The Kansas City Chiefs signed wide receiver Amani Toomer.

The New York Jets claimed tight end Kevin Brock off waivers; released tight end Richard Owens.

The Philadelphia Eagles signed defensive end Jason Babin and linebacker Matt Wilhelm; released defensive tackle Jervonte Jackson, cornerback Courtney Robinson, wide receiver Marcus Thigpen.

The Washington Redskins waived defensive tackle Vaka Manupana.

The Denver Broncos signed linebacker Robert Ayers.

The New England Patriots signed quarterback Andrew Walter; released quarterback Matt Gutierrez.

The Houston Texans signed linebacker Brian Cushing.

The Jacksonville Jaguars signed offensive tackle Eben Britton; signed wide receiver Clarence Denmark.

The Miami Dolphins signed quarterback Pat White and safety Chris Clemons; released guard J.D. Quinn.

The New England Patriots signed linebacker Rob Ninkovich and defensive back Jamar Love; released linebacker Vince Redd.

The Seattle Seahawks signed cornerback Travis Fisher.

The Tampa Bay Buccaneers signed guard Ryan Schmidt; released guard Maurice Miller.

The Atlanta Falcons signed linebacker Jamie Winborn; waived linebacker Rashad Bobino.

The Buffalo Bills signed defensive lineman Corey Mace and cornerback Antwain Spann.

The Houston Texans re-signed defensive tackle Jeff Zgonina.

The Miami Dolphins signed defenseive back Vontae Davis.

The New England Patriots waived punter Tom Malone.

The New York Giants signed wide receiver Hakeem Nicks.

The Philadelphia Eagles signed defensive tackle Willie Williams.