New England Patriots quarterback Tom Brady (12) runs through drills during NFL football practice in Foxborough, Mass., Wednesday, June 2, 2010. (AP Photo/Stew Milne)

Pittsburgh Steelers quarterback Ben Roethlisberger (7) throws a pass as offensive coordinator Bruce Arians, right, looks on during football practice on Tuesday, June 1, 2010 in Pittsburgh. (AP Photo/Gene J. Puskar)

Dallas Cowboys quarterback Tony Romo (9) calls a play in the huddle during the OTA practice, Tuesday, June 1, 2010 at the team's headquarters in Irving, Texas. (AP Photo/James D Smith)

Dallas Cowboys running back Felix Jones (28) grabs teammate Sean Lee (45) during a drill at football practice at Cowboys Stadium in Arlington, Texas, Wednesday, June 2, 2010. (AP Photo/Cody Duty)

Cleveland Browns quarterbacks Seneca Wallace (6), Jake Delhomme (17) and Colt McCoy (12) run a drill during a voluntary NFL football practice Thursday, June 3, 2010, in Berea, Ohio. (AP Photo/Mark Duncan)

Pittsburgh Steelers quarterback Ben Roethlisberger, center top, addresses the gathered media after a practice session at the NFLfootball team's facility in Pittsburgh, Thursday, June 3, 2010. This is the first time Roethlisberger talked with reporters since he has been cleared by the NFL to return to the Steelers for practice and meetings. The quarterback was suspended without pay for six games in the 2010 season by commissioner Roger Goodell after a 20-year-old college student accused him of sexual assault in Milledgeville, Ga. No charges were filed. (AP Photo/Keith Srakocic)

New Orleans Saints defensive coordinator Gregg Williams talks to his defense during pracice at the club's NFL football training facility in Metairie, Friday, June 4, 2010. (AP Photo/Bill Haber)

The New Orleans Saints go through their stretching exercises at the club's NFL football training facility in Metairie, Saturday, June 5, 2010. This is the second day of the Saints three day mini camp. (AP Photo/Bill Haber)

Jacksonville Jaguars quarterback Luke McCown (12) motions to a receiver during football workouts in Jacksonville, Fla., Monday, June 7, 2010.(AP Photo/John Raoux)

Arizona Cardinals linebackers Gerald Hayes (54), Monty Beisel (52), Mark Washington (96) and Joey Porter (55) run drills during minicamp practice at the NFL football team's training facility Monday, June 7, 2010, in Tempe, Ariz. (AP Photo/Ross D. Franklin)

Oakland Raiders quarterback Jason Campbell (8) passes during NFL football practice at Raiders headquarters in Alameda, Calif., Wednesday, June 9, 2010. (AP Photo/Paul Sakuma)

Cleveland Browns running back Jerome Harrison takes a hand off from quarterback Jake Delhomme at the team's NFL football minicamp in Berea, Ohio on Thursday, June 10, 2010. (AP Photo/Amy Sancetta)

St. Louis Rams wide receiver Jordan Kent brings in a catch in front of cornerback Cord Parks during practice at a team mini-camp, Thursday, June 10, 2010 in St. Louis.(AP Photo/Tom Gannam)

St. Louis Rams first-round draft pick quarterback Sam Bradford throws during practice at a team minicamp, Thursday, June 10, 2010, in St. Louis.(AP Photo/Tom Gannam)

San Francisco 49ers running back Frank Gore, left, takes a handoff from quarterback Alex Smith during NFL football practice at 49ers headquarters in Santa Clara, Calif., Thursday, June 10, 2010. (AP Photo/Jeff Chiu)

Minnesota Vikings linebacker Jared Allen shares a laugh with a coach before an off-season training session at Vikings football training facility Saturday, June 12, 2010 in Eden Prairie, Minn..(AP Photo/Andy King)

Tampa Bay Buccaneers quarterback's Josh Freeman (5) and Josh Johnson (11) run through drills during voluntary NFL football workouts Monday, June 14, 2010, in Tampa, Fla. (AP Photo/Chris O'Meara)

New York Jets cornerback Drew Coleman, left, breaks up a pass intended for wide receiver David Clowney during NFL football minicamp Monday, June 14, 2010 in Florham Park, N.J. (AP Photo/Bill Kostroun)

New York Jets wide receiver Braylon Edwards, left, breaks away from cornerback Darrelle Revis at the NFL football team's minicamp Monday, June 14, 2010, in Florham Park, N.J. (AP Photo/Bill Kostroun)

San Francisco 49ers runningback Frank Gore (21) runs during NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

Seattle Seahawks head coach Pete Carroll, left, looks on as quarterback Matt Hasselbeck throws as he takes part in practice drills during an NFL football organized team activity, Monday, May 17, 2010, at Seahawks headquarters in Renton Wash. (AP Photo/Ted S. Warren)

Kansas City Chiefs warm up during a football mini camp at the team's practice facility Monday, May 17, 2010, in Kansas City, Mo. (AP Photo/Orlin Wagner)

Houston Texans head coach Gary Kubiak, left, talks with rookie guard Shelley Smith (71) during the team's opening NFL football mini camp Monday, May 17, 2010, in Houston. (AP Photo/Dave Einsel)

Kansas City Chiefs wide receiver Dexter McCluster (22) catches a ball during a football mini camp Monday, May 17, 2010, in Kansas City, Mo. (AP Photo/Orlin Wagner)

Seattle Seahawks linebackers Lofa Tatupu, left, Matt McCoy, center, and David Hawthorne, right, walk off the field after taking part in practice drills during an NFL football organized team activity, Monday, May 17, 2010, at Seahawks headquarters in Renton Wash. (AP Photo/Ted S. Warren)

Houston Texans' Brian Cushing (56) talks with line backer coach Johnny Holland, left, during the team's opening NFL football mini camp Monday, May 17, 2010, in Houston. (AP Photo/Dave Einsel)

Houston Texans' Brian Cushing (56) runs drills during the team's opening NFL football mini camp Monday, May 17, 2010, in Houston. (AP Photo/Dave Einsel)

San Francisco 49ers players huddle during NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers tight end Vernon Davis (85) stretches during NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

From left to right, San Francisco 49ers quarterback David Carr (5), quarterback Alex Smith, quarterback Nate Davis and quarterback Jarrett Brown, passes during NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers guard Mike Iupati (77) stretches during NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers head coach Mike Singletary watches NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

San Francisco 49ers wide receiver Michael Crabtree (15) runs during NFL football organized team activities at the 49ers training facility in Santa Clara, Calif., Monday, May 17, 2010. (AP Photo/Paul Sakuma)

Kansas City Chiefs coach Todd Haley walks among his team during a football mini camp at the team's practice facility Monday, May 17, 2010, in Kansas City, Mo. (AP Photo/Orlin Wagner)

Dallas Cowboys NFL football quarterback Tony Romo (9) yells to a teammate during an organized team activity at Valley Ranch in Irving, Texas, Monday, May 17, 2010. (AP Photo/LM Otero)

Kansas City Chiefs quarterback Matt Cassel throws during a football mini camp at the team's practice facility Monday, May 17, 2010, in Kansas City, Mo. (AP Photo/Orlin Wagner)

Dallas Cowboys NFL football wide receiver Roy Williams (11) reaches with the ball after catching a pass during an organized team activity at Valley Ranch in Irving, Texas, Monday, May 17, 2010. (AP Photo/LM Otero)

Dallas Cowboys NFL football quarterback Tony Romo listens to reporters questions while sitting at his locker after an organized team activity at Valley Ranch in Irving, Texas, Monday, May 17, 2010. (AP Photo/LM Otero)

Kansas City Chiefs wide receiver Dwayne Bowe (82) warms up during a football mini camp at the team's practice facility Monday, May 17, 2010, in Kansas City, Mo. (AP Photo/Orlin Wagner)

Dallas Cowboys owner Jerry Jones yells to reporters about a pass play just run during team organized team activities at Valley Ranch in Irving, Texas, Monday, May 17, 2010. (AP Photo/LM Otero)

Dallas Cowboys NFl football wide receiver Roy Williams (11) looks to pull in a football pass during an organized team activity at Valley Ranch in Irving, Texas, Monday, May 17, 2010. (AP Photo/LM Otero)

Denver Broncos head coach Josh McDaniels, back center, talks to talks to players as they loosen up during mini-camp at the team's training facility in Englewood, Colo., on Monday, May 17, 2010. Players from left are Brandon Stokley(14), Landis Williams (16) and Kyle Orton (8). (AP Photo/Ed Andrieski)

Denver Broncos quarterback Tim Tebow (15) sets up to pass as quarterback Kyle Orton (8) watches during mini camp at the team's training facility in Englewood, Colo., on Monday, May 17, 2010. (AP Photo/Ed Andrieski)

Denver Broncos quarterback Tim Tebow juggles a football during mini camp at the team's training facility in Englewood, Colo., on Monday, May 17, 2010. (AP Photo/Ed Andrieski)

Tennessee Titans offensive tackle Nevin McCaskill, right, defends against cornerback Ryan Mouton, left, in a game of powerball during a workout on Thursday, May 13, 2010, in Nashville, Tenn. Powerball is a conditioning game that combines touch football and basketball. (AP Photo/Mark Humphrey)

Tennessee Titans defensive end Eric Bakhtiari, left, stops Eugene Amano (54) from shooting the football in a trash can during a game of powerball at a workout Thursday, May 13, 2010, in Nashville, Tenn. Powerball is a conditioning game that combines flag football and basketball. At right is tackle Michael Roos (71). (AP Photo/Mark Humphrey)

Tennessee Titans quarterback Vince Young drop-kicks a football during a workout on Thursday, May 13, 2010 in Nashville, Tenn. (AP Photo/Mark Humphrey)

Tennessee Titans quarterback Vince Young works out during a practice on Thursday, May 13, 2010 in Nashville, Tenn. (AP Photo/Mark Humphrey)

Cornerback Adam "Pacman" Jones runs a play during a football workout with the Cincinnati Bengals at Paul Brown Stadium in Cincinnati, on Tuesday, May 11, 2010. (AP Photo/Tom Uhlman)

Cornerback Adam "Pacman" Jones, left, and Gibril Wilson, wait to run a play play during a football workout with the Cincinnati Bengals at Paul Brown Stadium in Cincinnati, on Tuesday, May 11, 2010. (AP Photo/Tom Uhlman)

Cornerback Adam "Pacman" Jones, left, laughs with Keiwan Ratliff, right, after a football workout with the Cincinnati Bengals at Paul Brown Stadium in Cincinnati, on Tuesday, May 11, 2010. (AP Photo/Tom Uhlman)

Buffalo Bills running back C. J. Spiller (21) runs a drill during NFL football rookie mini-camp in Orchard Park, N.Y., Friday, May 7, 2010. (AP Photo/David Duprey)

San Diego Chargers running back Curtis Brinkley (44) runs with the ball during the San Diego Chargers NFL rookie minicamp, Friday, May 7, 2010 in San Diego. (AP Photo/Paul Jasienski)

San Diego Chargers rookie quarterback Jonathan Crompton (8) throws a pass during a Chargers rookie minicamp on May 7, 2010 in San Diego, California. (AP Photo/Paul Spinelli)

San Diego Chargers rookie running back Ryan Mathews (24) catches a one handed pass during a Chargers rookie minicamp on May 7, 2010 in San Diego, California. (AP Photo/Paul Spinelli)

The Atlanta Falcons huddle before the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons Arman Shields (85) makes a catch as Gabe Derricks defends during the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons head coach Mike Smith looks on during the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons running back Michael Turner stretches before he first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons tight end Tony Gonzalez hauls in a pass during the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons receiver Eric Weems works out during the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons quarterback Matt Ryan throws a pass during the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

Atlanta Falcons first-round draft pick Sean Weatherspoon runs during the first day of minicamp football practice at the team's training complex in Flowery Branch, Ga., Friday, May 7, 2010. (AP Photo/John Bazemore)

In this photo taken on May 7, 2010, Buffalo Bills' Ed Wang runs a drill during NFL football mini-camp in Orchard Park, N.Y. Wang is the first player with direct Chinese ancestry to be selected in the NFL draft, chosen by the Buffalo Bills out of Virginia Tech in the fifth round. (AP Photo/David Duprey)

Buffalo Bills running back C. J. Spiller looks on during NFL football rookie mini-camp in Orchard Park, N.Y., Friday, May 7, 2010. (AP Photo/David Duprey)

Buffalo Bills coach Chan Gailey takes notes during NFL football rookie mini-camp in Orchard Park, N.Y., Friday, May 7, 2010. (AP Photo/David Duprey)

Buffalo Bills quarterback Brian Brohm (4) throws to running back C. J. Spiller (21) during NFL football rookie camp in Orchard Park, N.Y., Friday, May 7, 2010. (AP Photo/David Duprey)

Baltimore Ravens' Anquan Boldin runs uring rookie football mini-camp, Friday, May 7, 2010 in Owings Mills, Md.(AP Photo/Gail Burton)

Baltimore Ravens top raft pick linebacker Sergio Kindle (49) runs a drill uring rookie football mini-camp, Friday, May 7, 2010 in Owings Mills, Md.(AP Photo/Gail Burton)

Baltimore Ravens' Anquan Boldin catches a pass during rookie football mini-camp, Friday, May 7, 2010 in Owings Mills, Md.(AP Photo/Gail Burton)

Baltimore Ravens' Anquan Boldin, left, and Sergio Kindle wait to answer questions from reporters after minicamp football practice Friday, May 7, 2010, in Owings Mills, Md.(AP Photo/Gail Burton)

Baltimore Ravens Ray Lewis, right, and Joe Flacco share a laugh after minicamp football practice Friday, May 7, 2010, in Owings Mills, Md.(AP Photo/Gail Burton)

Philadelphia Eagles wide receiver DeSean Jackson #10 congratulates Wide Receiver Chad Hall #16 after a play during the NFL Preseason Minicamp on Sunday May 2nd 2010 at the Novacare Complex in Philadelphia, Pennsylvania. (AP Photo/Brian Garfinkel)

Philadelphia Eagles Quarterback Mike Kafka #8 during the NFL Preseason Minicamp on Saturday May 1st 2010 at the Novacare Complex in Philadelphia, Pennsylvania. (AP Photo/Brian Garfinkel)

Philadelphia Eagles wide receiver DeSean Jackson #10 speaks with Head Coach Andy Reid during the NFL Preseason Minicamp on Sunday May 2nd 2010 at the Novacare Complex in Philadelphia, Pennsylvania. (AP Photo/Brian Garfinkel)

St. Louis Rams quarterback Sam Bradford drops back to pass during rookie NFL football minicamp Friday, April 30, 2010, in St. Louis. After the first of two practices Friday, coach Steve Spagnuolo complimented Bradford's poise and take-charge attitude. (AP Photo/Jeff Roberson)

Denver Broncos rookie quarterback Tim Tebow looks to pass the ball on Friday, April 30, 2010, at the football team's headquarters in Englewood, Colo. The Broncos will hold their rookie camp through the weekend. (AP Photo/David Zalubowski)

Cincinnati Bengals quarterback Carson Palmer watches quarterback Billy Cundiff pass during the NFL football team's rookie minicamp, Friday, April 30, 2010, in Cincinnati. (AP Photo/Al Behrman)

Cincinnati Bengals first round draft pick Jermaine Gresham, a tight end from Oklahoma, stretches during the NFL football team's rookie minicamp, Friday, April 30, 2010, in Cincinnati. (AP Photo/Al Behrman)

Cincinnati Bengals receivers Jordan Shipley (11) and Dezmon Briscoe (88) watch during the NFL football team's rookie minicamp, Friday, April 30, 2010, in Cincinnati. Shipley is a third round draft pick from Texas, and Briscoe a sixth round draft pick from Kansas. (AP Photo/Al Behrman)

Cornerback Devin McCourty (32) leaps to catch a football during New England Patriots NFL football rookie mini-camp in Foxborough, Mass. Friday, April 30, 2010. (AP Photo/Elise Amendola)

Carolina Panthers' first pick in the 2010 draft, Jimmy Clausen, from Notre Dame, waits to talk to the media after their NFL football minicamp on Friday, April 30, 2010 in Charlotte, N.C. (AP Photo/Rick Havner)

Carolina Panthers' 3rd round draft pick, Armanti Edwards, from Appalachian State, rests after their NFL football minicamp on Friday, April 30, 2010 in Charlotte, N.C. (AP Photo/Rick Havner)

Carolina Panthers' 6th round draft pick, Tony Pike (16) throws a pass during an NFL football minicamp on Friday, April 30, 2010 in Charlotte, N.C. (AP Photo/Rick Havner)

New England Patriots quarterback Zac Robinson (7) faces reporters during rookie football mini-camp in Foxborough, Mass. Friday, April 30, 2010. (AP Photo/Elise Amendola)

Denver Broncos head coach Josh McDaniels, left, chats with rookie quarterback Tim Tebow on Friday, April 30, 2010, at the football team's headquarters in Englewood, Colo. The Broncos will hold their rookie camp through the weekend. (AP Photo/David Zalubowski)

Denver Broncos rookie quarterback Tim Tebow runs an obstacle course on Friday, April 30, 2010, at the football team's headquarters in Englewood, Colo. The Broncos will hold their rookie camp through the weekend. (AP Photo/David Zalubowski)

New England Patriots assistant head coach/offensive line Dante Scarnecchia instructs offensive linesmen John Wise (71) and Ted Larsen (62) during rookie football mini-camp in Foxborough, Mass. Friday, April 30, 2010. (AP Photo/Elise Amendola)

Denver Broncos rookie quarterback Tim Tebow runs an obstacle course on Friday, April 30, 2010, at the football team's headquarters in Englewood, Colo. The Broncos will hold their rookie camp through the weekend. (AP Photo/David Zalubowski)

Dallas Cowboys wide receiver Dez Bryant (88) catches a pass under the watchful eye of wide receivers coach Ray Sherman during rookie football mini-camp at Valley Ranch in Irving, Texas, Friday, April 30, 2010. This is Bryant's first workout since being the first round draft pick of the Cowboys. (AP Photo/LM Otero)

Dallas Cowboys owner Jerry Jones, left, smiles at wide receiver Dez Bryant (88) during rookie football mini-camp at Valley Ranch in Irving, Texas, Friday, April 30, 2010. This is Bryant's first workout since being the first round draft pick of the Cowboys. (AP Photo/LM Otero)

New York Jets assistant coach Anthony Lynn, third from left, shouts as rookie Joe McKnight, center, runs with the football during rookie football mini-camp Friday, April 30, 2010, in Florham Park, N.J. (AP Photo/Mel Evans)

New York Giants coach Tom Coughlin, left, general manager Jerry Reese, right, pose with their draft choices, Jason Pierre-Paul (90), Linval Joseph (97), Chad Jones (35), Phillip Dillard (55), Mitch Petrus (62), Adrian Tracy (98) and Matt Dodge (6) at rookie football mini-camp, Friday, April 30, 2010, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Dallas Cowboys head coach Wade Philips, left, demonstrates a drill with a yellow rubber ball to running back Herb Donaldson (31) during rookie football mini-camp at Valley Ranch in Irving, Texas, Friday, April 30, 2010.(AP Photo/LM Otero)

New York Giants' Brandon Crawford (63) runs a drill during rookie football mini-camp Friday, April 30, 2010 in East Rutherford, N.J. (AP Photo/Bill Kostroun)

New York Giants' Brandon Crawford, right, blocks Ayanga Okpokowuruk during rookie football mini-camp, Friday, April 30, 2010, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

Tampa Bay Buccaneers first round draft pick Gerald McCoy (93) runs through stretching drills during the rookie football mini-camp Friday, April 30, 2010 in Tampa, Fla. McCoy played his college football at Oklahoma. (AP Photo/Chris O'Meara)