President Obama greets guests in the East Room of the White House in Washington, Monday, Aug. 9, 2010, after a ceremony in which he honored the 2009 NFL Super Bowl-winning New Orleans Saints. (AP Photo/Charles Dharapak)
ASSOCIATED PRESS Dallas Cowboys linebacker Steve Octavien celebrates after nose tackle Josh Brent recovered a fumble by Cincinnati Bengals' Cordera Eason in the fourth quarter of the Hall of Fame NFL football game Sunday, Aug. 8, 2010, in Canton, Ohio.
ASSOCIATED PRESS Cincinnati Bengals wide receiver Terrell Owens runs back to the line of scrimmage in the first quarter of the Hall of Fame NFL football game against the Dallas Cowboys Sunday, Aug. 8, 2010, in Canton, Ohio.
Houston Texans wide receiver Andre Johnson (80) catches a pass as linebacker DeMeco Ryans (59) defends during a NFL football training camp practice Thursday, Aug. 5, 2010, in Houston. (AP Photo/David J. Phillip)
FILE - This April 23, 2010, file photo shows C.J. Spiller, the Buffalo Bills first round pick in the NFL 2010 Draft, listening to a question during an NFL football news conference at Bills headquarters in Orchard Park, N.Y. Spiller has reached an agreement on a five-year deal potentially worth $37 million with the Buffalo Bills on Friday, Aug. 6, 23010, The Associated Press has learned. (AP Photo/Don Heupel, File)
New York Giants offensive linemen Chris Snee (76), Rich Seubert (69), David Diehl (66) and Will Beatty (65) break huddle during NFL football training camp in Albany, N.Y., on Monday, Aug. 2, 2010. (AP Photo/Mike Groll)
FILE - In this Dec. 2, 2010, file photo, Philadelphia Eagles' Michael Vick (7) scrambles out of the pocket during the second half of an NFL football game against the Houston Texans in Philadelphia. (AP Photo/Michael Pere, File)
FILE - This Dec. 24, 1995, file photo shows San Francisco 49ers wide receiver Jerry Rice (80) catching a pass as Atlanta Falcons cornerback D.J. Johnson (44) defends in the first quarter of an NFL game at the Georgia Dome in Atlanta. Rice was elected on his first try and will be inducted into the Hall of Fame on Saturday, along with Emmitt Smith, John Randle, Russ Grimm, Rickey Jackson, Floyd Little and Dick LeBeau. (AP Photo/Tannen Maury)
ASSOCIATED PRESS Washington Redskins' Albert Haynesworth, left, walks from the field after training with defensive line coach Jacob Burney, center, and defensive coordinator Jim Haslett at the NFL football team's training camp at Redskins Park, Thursday, Aug. 5, 2010, in Ashburn, Va.
FILE - This Sept. 14, 2008, file photo shows New York Jets quarterback Brett Favre throwing a pass against the New England Patriots during the first quarter in an NFL football game, in East Rutherford, N.J. A person with knowledge of the situation told The Associated Press on Tuesday, Aug. 3, 2010, that Favre has informed the Vikings he won't return for a second season. (AP Photo/Julie Jacobson, File)
In this photo taken Monday, Aug. 2, 2010, Seattle Seahawks linebackers coach Ken Norton Jr. yells during an NFL football training camp in Renton, Wash. The fiery former Cowboys champion and 49ers Pro Bowl hitter is back in the NFL, following Pete Carroll from USC to Seattle. His barks at his defenders and taunts at the offense is louder and more constant than the music Carroll is thumping throughout training camp. (AP Photo/Elaine Thompson)
In this photo taken Sunday, Aug. 1, 2010, Indianapolis Colts head coach Jim Caldwell, left, talks with Anderson Mayor Kris Ockomon as the members of the Colts arrive for the NFL football training camp in Anderson, Ind. (AP Photo/Darron Cummings)
NFL commissioner Roger Goodell, right, and Pro Football Hall of Fame coach John Madden, rear left, leave the NFL offices to board Madden's bus the 'Madden Cruiser, ' to visit training camps, Tuesday, Aug. 3, 2010 in New York. (AP Photo/David Goldman)
ASSOCIATED PRESS Washington Redskins quarterbacks from left Richard Bartel, Donovan McNabb and John Beck, gather at the NFL football team's training camp at Redskins Park, Tuesday, Aug. 3, 2010, in Ashburn, Va.