Oakland Raiders linebacker Jon Alston, right, battles with San Francisco 49ers running back Kory Sheets during a joint NFL football training camp in Napa, Calif ., on Tuesday, Aug. 18, 2009. (AP Photo/Marcio Jose Sanchez)

Seattle Seahawks' T.J. Houshmandzadeh, left, signs the side of the head of Phil Andruss, of Lynnwood, Wash., after an NFL football training camp workout Monday, Aug. 3, 2009, in Renton, Wash. (AP Photo/Elaine Thompson)

Washington Redskins defensive end Albert Haynesworth lifts a tackling dummy in drills during NFL football training camp at Redskins Park in Ashburn, Va.,Tuesday, Aug. 4, 2009. (AP Photo/Pablo Martinez Monsivais)

Two Washington Redskins rookies, cornerback Kevin Barnes, left, and linebacker Robert Henson (58), are tied up to a goal post following practice at the NFL football team's training camp at Redskins Park in Ashburn, Va., Monday, Aug. 17, 2009. (AP Photo/Pablo Martinez Monsivais)

Kansas City Chiefs wide receiver Amani Toomer catches a pass during NFL football training camp in River Falls, Wis., Tuesday, Aug. 4, 2009. It was Toomer's first day in camp after signing with the Chiefs. (AP Photo/Orlin Wagner)

Miami Dolphins quarterback Chad Pennington throws a pass during the second day of NFL football training camp Monday, Aug. 3, 2009, at the Dolphins Training Facility in Davie, Fla. (AP Photo/Wilfredo Lee)

Chicago Bears' Jay Cutler throws during the NFL football training camp at Olivet Nazarene University in Bourbonnais, Ill., Friday, July 31, 2009. (AP Photo/Nam Y. Huh)

A Chicago Bears fan watches the Bears players practice during the team's NFL football training camp at Olivet Nazarene University in Bourbonnais, Ill., Friday, July 31, 2009, in Bourbonnais, Ill., (AP Photo/Nam Y. Huh)

Miami Dolphins players run through drills during the first day of NFL football training camp Sunday, Aug. 2, 2009 at the Dolphins Training Facility in Davie, Fla. (AP Photo/Wilfredo Lee)

Miami Dolphins head coach Tony Sparano walks past players during the second day of NFL football training camp Monday, Aug. 3, 2009 at the Dolphins Training Facility in Davie, Fla. (AP Photo/Wilfredo Lee)

Atlanta Falcons' receiver Harry Douglas (83) and defensive back Brent Grimes wrestle for control of the ball during NFL training camp in Flowery Branch, Ga., Saturday, Aug. 1. 2009 in Atlanta . (AP Photo/John Bazemore)

Kansas City Chiefs wide receiver Dwayne Bowe (82) is tackled by corner back Brandon Carr (39) during NFL football training camp in River Falls, Wis., Saturday, Aug. 1, 2009. (AP Photo/Orlin Wagner)

New England Patriots quarterback Tom Brady signs autographs after practice during NFL football training camp at Gillette Stadium in Foxborough, Mass. Saturday, Aug. 1, 2009. (AP Photo/Winslow Townson)

Seattle Seahawks wide receiver T.J. Houshmandzadeh talks with teammates as they take part in practice drills, Friday, July 31, 2009, on the first day of NFL football training camp in Renton, Wash. (AP Photo/Ted S. Warren)

St. Louis Rams wide receiver Keenan Burton (14) tries to catch a pass as safety Craig Dahl defends during NFL football training camp Saturday, Aug. 1, 2009, at the Rams' training facility in St. Louis. (AP Photo/Jeff Roberson)

Minnesota Vikings rookie linebacker Jasper Brinkley, right, runs around a blocking dummy under the eye of assistant coach Jason Glenn during NFL football training camp, Saturday, Aug. 1, 2009, in Mankato, Minn. (AP Photo/Jim Mone)

Pittsburgh Steelers quarterback Ben Roethlisberger, center, is swarmed by reporters and cameras after the first practice at their NFL football training camp in Latrobe, Pa., Saturday, Aug. 1, 2009. (AP Photo/Keith Srakocic)

Arizona Cardinals wide receiver Larry Fitzgerald make a catch during drills during an NFL football training camp Friday, July 31, 2009 in Flagstaff, Ariz. (AP Photo/Matt York)

Baltimore Ravens wide receiver Derrick Mason (85) talks with coach John Harbaugh, right, during the NFL football team's training camp, Monday, Aug. 3, 2009, in Westminster, Md. (AP Photo/Rob Carr)

Tampa Bay Buccaneers quarterback Byron Leftwich drops back for a pass while getting pressure from Jimmy Wilkerson (97) during NFL football training camp Sunday, Aug. 2, 2009, in Tampa, Fla. (AP Photo/Brian Blanco)

Baltimore Ravens quarterback Joe Flacco during the NFL football team's training camp, Wednesday, July 29, 2009, in Westminster, Md. (AP Photo/Rob Carr)

New York Giants quarterback Eli Manning stretches during NFL football training camp in Albany, N.Y., Monday, Aug. 3, 2009. (AP Photo/Mike Groll)

New York Giants offensive linemen Rich Seubert, left, and Chris Snee perform a drill during NFL football training camp in Albany, N.Y., Monday, Aug. 3, 2009. (AP Photo/Mike Groll)

Arizona Cardinals first-round draft pick Beanie Wells runs drills during an NFL football training camp Saturday, Aug. 1, 2009 in Flagstaff, Ariz. (AP Photo/Matt York)

Green Bay Packers' Tramon Williams breaks up a pass intended for Kole Heckendorf during NFL football training camp Saturday, Aug. 1, 2009, in Green Bay, Wis. (AP Photo/Morry Gash)

Denver Broncos coach Josh McDaniels, back, looks on as players square off while taking part in drills during the NFL football team's training camp in Englewood, Colo., on Sunday, Aug. 2, 2009. (AP Photo/David Zalubowski)

Kai Ray-Belote carries the helmet for Detroit Lions quarterback Matthew Stafford (9) as Luke Bowen, right, does the same for quarterback Drew Stanton (5) before the start of the Lions NFL football training camp, Saturday, Aug. 1, 2009, in Allen Park, Mich. (AP Photo/Duane Burleson)

Tennessee Titans quarterback Vince Young hands the ball off during NFL football training camp in Nashville, Tenn., Saturday, Aug. 1, 2009. (AP Photo/Mark Humphrey)

With Lambeau Field in the background, Green Bay Packers players ride bicycles to NFL football training camp Sunday, Aug. 2, 2009, in Green Bay, Wis. (AP Photo/Morry Gash)

Cincinnati Bengals head coach Marvin Lewis, left, laughs with receiver Chad Ochocinco (85) during their first practice at NFL football training camp, Friday, July 31, 2009, in Georgetown, Ky. (AP Photo/Al Behrman)

New England Patriots quarterback Tom Brady prepares to throw under pressure during NFL football training camp at Gillette Stadium in Foxborough, Mass., Friday, July 31, 2009. (AP Photo/Winslow Townson)

Pittsburgh Steelers linebacker James Harrison drives a subcompact car as he arrives at their NFL football training camp in Latrobe, Pa., Friday, July 31, 2009. (AP Photo/Keith Srakocic)

Quarterbacks Mark Sanchez, left, and Kellen Clemens perform passing drills during the New York Jets NFL football training camp in Cortland, N.Y., Friday, July 31, 2009. (AP Photo/Kevin Rivoli)

Oakland Raiders quarterback JaMarcus Russell jumps rope during NFL football training camp in Napa, Calif., Thursday, July 30, 2009. (AP Photo/Paul Sakuma)

Philadelphia Eagles' Brian Westbrook works out using a tire during the NFL football team's training camp at Lehigh University in Bethlehem, Pa., Thursday, July 30, 2009. (AP Photo/Matt Rourke)

New England Patriots wide receiver Wes Welker, center, runs with the ball as Patriots corner back Terrence Wheatley, left, and linebacker Jerod Mayo, right, pursue him during a Patriots NFL football training camp, in Foxborough, Mass., Thursday, July 30, 2009. (AP Photo/Steven Senne)

Washington Redskins linebacker Brian Orakpo hits the tackling sled in practice during NFL football training camp at Redskins Park on Friday, July 31, 2009 in Ashburn, Va. The No. 13 overall selection from Texas practiced Friday morning after signing a five-year deal Thursday night. (AP Photo/Evan Vucci)

Houston Texans defensive tackle DelJuan Robinson sprays water on his face as he tries to cool down during an NFL football training camp workout Friday, July 31, 2009 in Houston. (AP Photo/David J. Phillip)

New Orleans Saints cornerback Jabari Greer (32) plays defense against New Orleans Saints wide receiver Robert Meachem (17) during the morning practice session at the club's NFL football training camp in Metairie, La., Friday, July 31, 2009. (AP Photo/Bill Haber)

Houston Texans head coach Gary Kubiak, center, smiles as he watches his team during an NFL football training camp workout Friday, July 31, 2009 in Houston. (AP Photo/David J. Phillip)

New Orleans Saints quarterback Drew Brees (9) waves to the fans as he begins his stretching exercises during the morning practice session at the club's NFL football training camp in Metairie, La., Friday, July 31, 2009. (AP Photo/Bill Haber)

New England Patriots quarterback Tom Brady throws a pass during the first session of NFL training camp at their football facility in Foxborough, Mass., Thursday morning, July 30, 2009. (AP Photo/Stephan Savoia)

Dallas Cowboys quarterback Tony Romo throws a pass during the team's summer football camp practice in San Antonio, Wednesday, July 29, 2009. (AP Photo/Eric Gay)

Dallas Cowboys guard Montrae Holland, left, works on special team drills with teammates during their summer football camp practice in San Antonio, Wednesday, July 29, 2009. (AP Photo/Eric Gay)

Baltimore Ravens quarterback Joe Flacco signs autographs during the NFL football team's training camp, Tuesday, July 28, 2009, in Westminster, Md. (AP Photo/Rob Carr)

Eight year-old Washington Redskins fan Carter Burke, of Fairfax, Va., waits for autographs during NFL football training camp at Redskins Park on Thursday, July 30, 2009 in Ashburn, Va. (AP Photo/Evan Vucci)

Washington Redskins tight end Chris Cooley signs autographs during NFL football training camp at Redskins Park on Thursday, July 30, 2009 in Ashburn, Va. (AP Photo/Evan Vucci)

Washington Redskins head coach Jim Zorn pauses during NFL football training camp at Redskins Park on Thursday, July 30, 2009 in Ashburn, Va. (AP Photo/Evan Vucci)

Baltimore Ravens running back Willis McGahee talks with fans while signing autographs after practice during the NFL football team's training camp, Wednesday, July 29, 2009, in Westminster, Md. (AP Photo/Rob Carr)

Baltimore Ravens running back Willis McGahee carries the ball while doing drills during the NFL football team's training camp Tuesday, July 28, 2009, in Westminster, Md. (AP Photo/Rob Carr)

San Diego Chargers center Scott Mruczkowski, left, drives a blocking pad into teammate Tyronne Green during workouts at the Chargers' football training camp Tuesday, July 28, 2009, in San Diego. (AP Photo/Lenny Ignelzi)

WESTMINSTER, MD - JULY 28: Willis McGahee #23 of the Baltimore Ravens runs a drill during training camp at McDaniel College on July 28, 2009 in Westminster, Maryland. (Photo by Greg Fiume/Getty Images)

San Diego Chargers linebacker Shawne Merriman, returning after missing all of last season with an injury, battles a blocking dummy during the opening day of the Chargers' football training camp Monday, July 27, 2009, in San Diego. (AP Photo/Lenny Ignelzi)

Buffalo Bills' Terrell Owens during NFL football training camp at St. John Fisher College in Pittsford, N.Y., Sunday, July 26, 2009. (AP Photo/David Duprey)

Buffalo Bills' Terrell Owens stretches during NFL football training camp at St. John Fisher College in Pittsford, N.Y., Sunday, July 26, 2009. (AP Photo/David Duprey)

Philadelphia Eagles cornerback Courtney Robinson stretches after the morning session of football training camp at Lehigh University in Bethlehem, Pa. on Tuesday, July, 28, 2009. (AP Photo/Rich Schultz)

Buffalo Bills' Trent Edwards (5) hands off to Bills' Marshawn Lynch (23) during NFL football training camp at St. John Fisher College in Pittsford, N.Y., Saturday, July 25, 2009. (AP Photo/David Duprey)

Buffalo Bills' Shawn Nelson (89) and Lee Evans (83) work out with teammates during NFL football training camp at St. John Fisher College in Pittsford, N.Y., Sunday, July 26, 2009. (AP Photo/David Duprey)

Buffalo Bills owner Ralph Wilson Jr., talks to the team after practice during NFL football training camp at St. John Fisher College in Pittsford, N.Y., Monday, July 27, 2009. (AP Photo/ David Duprey)

Philadelphia Eagles quarterback Donovan McNabb, left, hands off to rookie runningback LeSean McCoy, right, while running plays during the morning practice at Lehigh University Monday, July 27, 2009, in Bethlehem, PA. (AP Photo/Btadley C Bower)

Denver Broncos wide receiver Brandon Marshall runs with teammates during the NFL football team's training camp in Englewood, Colo., on Monday, July 27, 2009. (AP Photo/Ed Andrieski)

Houston Texans defensive end Mario Williams cools off during an NFL football training camp workout Friday, July 31, 2009 in Houston. (AP Photo/David J. Phillip)

Arizona Cardinals wide receivers Larry Fitzgerald, front, and Anquan Boldin, run during an NFL football training camp Friday, July 31, 2009 in Flagstaff, Ariz. (AP Photo/Matt York)

Cleveland Browns coach Eric Mangini, right, talks to quarterback Brady Quinn during practice at the team's NFL football training camp in Berea, Ohio Tuesday, Aug. 18, 2009. (AP Photo/Mark Duncan)

FILE - In this Sunday, Aug. 16, 2009, file photo, Philadelphia Eagles quarterback Michael Vick throws during NFL football practice at team's practice facility in Philadelphia. Vick will make his preseason debut for the Philadelphia Eagles on Thursday night, Aug. 27, 2009. (AP Photo/Matt Slocum, File)

In this Aug. 13, 2009, photo, Tennessee Titans center Kevin Mawae takes a rest while rehabilitating his torn left triceps tendon during NFL football training camp in Nashville, Tenn. Mawae was taken off the physically-unable-to-perform list Tuesday, Aug. 25, and participated in his first full practice. (AP Photo/Mark Humphrey)

Seattle Seahawks running back Julius Jones runs with the ball during NFL football practice drills Tuesday, Aug. 25, 2009, in Renton, Wash. The Seahawks practiced without running back Edgerrin James, a day after the league's active leading rusher reportedly had reached an agreement on a free-agent contract with the team. (AP Photo/Ted S. Warren)