Dallas Cowboys' Akwasi Owusu-Ansah, center, returns a kickoff during the team's NFL football training camp Wednesday, Aug. 4, 2010, in San Antonio. (AP Photo/Eric Gay)

New England Patriots quarterback Tom Brady throws under pressure from New Orleans Saints defensive end Jeff Charleston (97) during a joint football practice in Foxborough, Mass. Tuesday, Aug. 10, 2010. (AP Photo/Winslow Townson)

In this July 30, 2010 photo Carolina Panthers Robert McClain (36) and Sean Ware (49) defend as Oliver Young (18) catches a pass during practice at the NFL football team's training camp in Spartanburg, S.C. McClain's impressive Panthers training camp comes as he still thinks about his former Connecticut teammate, Jasper Howard, who was killed last year. (AP Photo/Chuck Burton, FIle)

Arizona Cardinals' Larry Fitzgerald (11) slips past defender Joey Porter (55) after making a catch during NFL football training camp, Friday, Aug. 6, 2010, in Flagstaff, Ariz. (AP Photo/Ross D. Franklin)

Cleveland Browns cornerback Sheldon Brown (24) steals the ball away from wide receiver Brian Robiskie during the Browns NFL football training camp in Berea, Ohio on Wednesday, Aug. 4, 2010. (AP Photo/Amy Sancetta)

New York Jets head coach Rex Ryan, right, bumps outside linebacker coach Jeff Weeks while having some fun during morning practice at the team's NFL football training camp in Cortland, N.Y., Wednesday, Aug. 4, 2010. (AP Photo/Kevin Rivoli)

Detroit Lions defensive tackles Ndamukong Suh, right, and Joe Cohen work out during NFL football training camp in Allen Park, Mich., Wednesday, Aug. 4, 2010. (AP Photo/Carlos Osorio)

Pittsburgh Steelers running back Rashard Mendenhall runs past a giant blocking dummy during drills at the NFL football team's training camp in Latrobe, Pa., Wednesday, Aug. 4, 2010. (AP Photo/Keith Srakocic)

Kansas City Chiefs defensive tackle Derek Lokey (99) leads the defense through a drill during NFL football training camp in St. Joseph, Mo., Wednesday, Aug. 4, 2010. (AP Photo/Orlin Wagner)

Tennessee Titans wide receivers Bobby Sewall, left, and Kenny Britt, right, work on their own following a night workout at NFL football training camp on Wednesday, Aug. 4, 2010, in Nashville, Tenn. (AP Photo/Mark Humphrey)

Houston Texans wide receiver Andre Johnson (80) catches a pass during NFL football training camp practice Thursday, Aug. 5, 2010 in Houston. (AP Photo/David J. Phillip)

St. Louis Rams quarterback Sam Bradford calls out a play at the line of scrimmage during NFL football training camp at the team's training facility, Thursday, Aug. 5, 2010, in St. Louis. (AP Photo/Jeff Roberson)

Pittsburgh Steelers safety Ryan Clark leans on a goal post as he stretches before the morning practice session at the NFL football team's training camp in Latrobe, Pa. Thursday, Aug. 5, 2010. (AP Photo/Keith Srakocic)

Jacksonville Jaguars linebacker Larry Hart (59) works on a drill while teammates, defensive tackle Atiyyah Ellison (99) and defensive tackle Terrance Knighton (96) look on, during an NFL football workout in Jacksonville, Fla., Tuesday, Aug. 3, 2010.(AP Photo/John Raoux)

Baltimore Ravens quarterback Joe Flacco throws a pass during the NFL football team's training camp, Tuesday, Aug. 3, 2010, in Westminster, Md. (AP Photo/Rob Carr)

Dallas Cowboys' Sean Lee works with heavy ropes during the team's NFL football training camp, Tuesday, Aug. 3, 2010, in San Antonio. (AP Photo/Eric Gay)

In this Aug. 2, 2010 photo Carolina Panthers running back Tony Fiammetta (42) runs through a drill during practice at the NFL football team's training camp in Spartanburg, S.C., Monday, Aug. 2, 2010. (AP Photo/Chuck Burton)

Cincinnati Bengals cornerback Johnathan Joseph (22) intercepts a pass intended for wide receiver Chad Ochocinco (85) during practice Tuesday, Aug. 3, 2010, at the NFL football team's training camp in Georgetown, Ky. (AP Photo/Al Behrman)

San Francisco 49ers tight end Vernon Davis, left, practices with linebacker Ahmad Brooks during NFL football training camp in Santa Clara, Calif., Tuesday, Aug. 3, 2010. (AP Photo/Jeff Chiu)

Oakland Raiders wide receiver Darrius Heyward-Bey runs with the ball after a reception during their football training camp in Napa, Calif., Tuesday, August 3, 2010. (AP Photo/Eric Risberg)

Houston Texans defensive tackle DelJuan Robinson sprays water on his face as he tries to cool down during a NFL football training camp practice Tuesday, Aug. 3, 2010 in Houston. (AP Photo/David J. Phillip)

Indianapolis Colts linebacker Gary Brackett (58) hits a pad while Dwight Freeney (93), Marlon Favorite (54) and Robert Mathis (98) look on during NFL training camp in Anderson, Ind., Tuesday, Aug. 3, 2010. (AP Photo/Darron Cummings)

Baltimore Ravens wide receiver Marcus Smith catches a pass during drills at the NFL football team's training camp, Friday, July 30, 2010, in Westminster, Md. (AP Photo/Rob Carr)

Oakland Raiders wide receiver Johnnie Lee Higgins reaches for a pass during football training camp in Napa, Calif., Thursday, July 29, 2010. (AP Photo/Eric Risberg)

Dallas Cowboys running back Felix Jones (28) evades tackles by safety Danny McCray (40) and linebacker Brandon Sharpe, right, during a morning practice at Cowboys NFL football training camp, Sunday, July 25, 2010, in San Antonio, Texas. (AP Photo/Tony Gutierrez)

Denver Broncos' Patrick Honeycutt, front, and Kenny McKinley workout during drills at football training camp at the team's facility in Englewood, Colo., on Wednesday, July 28, 2010. Rookies reported Wednesday and veterans come in Aug. 1. (AP Photo/Ed Andrieski)

Cincinnati Bengals wide receiver Chad Ochocinco (85) catches a pass against safety Rico Murray (44) during football practice, Thursday, July 29, 2010, in Georgetown, Kentucky. (AP Photo/Al Behrman)

Carolina Panthers quarterback Jimmy Clausen (2) looks to throw a pass under pressure during practice at the NFL football team's training camp in Spartanbrug, S.C., Thursday, July 29, 2010. (AP Photo/Chuck Burton)

New England Patriots wide receiver Brandon Tate, left, hangs onto a pass as cornerback Darius Butler, right, tries to take him down during their afternoon training camp in Foxborough, Mass., Thursday, July 29, 2010. (AP Photo/Charles Krupa)

New England Patriots tight end Alge Crumpler, center, is hit with blocking pads as he runs through a gauntlet of teammates during their afternoon training camp in Foxborough, Mass., Thursday, July 29, 2010.(AP Photo/Charles Krupa)

Buffalo Bills quarterback Trent Edwards (5) runs a drill with Levi Brown (10), Brian Brohm (4) and Ryan Fitzpatrick (14) at NFL football training camp in Pittsford, N.Y., Thursday, July 29, 2010. (AP Photo/ David Duprey)

Baltimore Ravens defender Travis Fisher (41) knocks the ball away from wide receiver Marcus Smith (11) during the NFL football team's training camp, Friday, July 30, 2010, in Westminster, Md. (AP Photo/Rob Carr)

New England Patriots' Tom Brady (12), Zac Robinson (7) and Brian Hoyer (8) run a drill during NFL football training camp, Friday, July 30, 2010, in Foxborough, Mass. (AP Photo/Michael Dwyer)

Buffalo Bills' Marshawn Lynch makes a catch at NFL football training camp in Pittsford, N.Y., Friday, July 30, 2010. (AP Photo/ David Duprey)

Buffalo Bills defensive coordinator George Edwards, right, talks with players at NFL football training camp in Pittsford, N.Y., Friday, July 30, 2010. (AP Photo/ David Duprey)

Kansas City Chiefs wide receiver Quinten Lawrence (14) catches a pass while covered by cornerback Javier Arenas (30) during practice at NFL football training camp Friday, July 30, 2010, in St. Joseph, Mo. (AP Photo/Orlin Wagner)

Washington Redskins wide receiver Devin Thomas (11) runs through a drill with receivers Anthony Armstrong (13) and Brandon Banks (16) during practice at the NFL football team's training camp, Saturday, July 31, 2010, at Redskins Park in Ashburn, Va. (AP Photo/Nick Wass)

New Orleans Saints quarterback Drew Brees leads backup quarterbacks Patrick Ramsey, Chase Daniel and Sean Canfield onto the field for stretching on the second day of training camp at their NFL football training facility in Metairie, La., Saturday, July 31, 2010. (AP Photo/Chuck Cook)

Carolina Panthers running back DeAngelo Williams, center, runs during practice at the NFL football team's training camp in Spartanburg, S.C., Saturday, July 31, 2010. (AP Photo/Chuck Burton)

Seattle Seahawks quarterback Matt Hasselbeck throws a pass during the opening day of NFL football training camp on Saturday, July 31, 2010, in Renton, Wash. (AP Photo/John Froschauer)

Detroit Lions running back Jahvid Best (44) runs through drills during NFL Football training camp in Allen Park, Mich., Saturday, July 31, 2010. (AP Photo/Carlos Osorio)

Green Bay Packers' Aaron Rodgers watches his teammates during NFL football training camp Saturday, July 31, 2010, in Green Bay, Wis. (AP Photo/Morry Gash)

Arizona Cardinals wide receiver Larry Fitzgerald makes a catch during the teams' first day of training camp Saturday, July 31, 2010 in Flagstaff, Ariz. (AP Photo/Matt York)

Cincinnati Bengals wide receiver Terrell Owens (81) enjoys a laugh while wide receiver Chad Ochocinco (85) checks out a young fan's cell phone during practice Sunday, Aug. 1, 2010, at the NFL football team's training camp in Georgetown, Ky. (AP Photo/Al Behrman)