Carolina Panthers quarterback Cam Newton throws a pass during practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton smiles during a drill in practice at the NFL team's football training camp in Spartanburg, S.C., Monday, July 30, 2012. (AP Photo/Chuck Burton)

Carolina Panthers fans brave the rain to watch practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Brandon LaFell catches a pass during practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

In this photo taken July 28, 2012, Carolina Panthers' Brandon LaFell stretches during practice at the NFL team's football training camp in Spartanburg, S.C. (AP Photo/Chuck Burton)

Carolina Panthers' Brandon LaFell looks for a signal during practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

In this photo taken July 29, 2012, Carolina Panthers' Ron Edwards stretches during practice NFL football training camp in Spartanburg, S.C. (AP Photo/Chuck Burton)

In this Sunday, July 29, 2012, photo Carolina Panthers' Ron Edwards, left, blocks Charles Johnson, right, during practice at the NFL football team's training camp in Spartanburg, S.C. Edwards' first season in Carolina lasted all of about two-and-a-half hours. He tore his triceps in the Panthers' first training camp practice last summer and spent the rest of the season on injured reserve. (AP Photo/Chuck Burton)

In this photo taken, July 31, 2012, Carolina Panthers' Justin Medlock kicks during practice at the team's NFL football training camp in Spartanburg, S.C. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton throws a pass during practice at NFL football training camp in Spartanburg, S.C., Thursday, Aug. 2, 2012. (AP Photo/Chuck Burton)

Carolina Panthers kicker Olindo Mare catches a ball during practice at the NFL team's football training camp in Spartanburg, S.C., Thursday, Aug. 2, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Steve Smith (89) catches a pass as Chris Gamble (20) defends during practice at the NFL team's football training camp in Spartanburg, S.C., Thursday, Aug. 2, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton, right, signs autographs after practice at the NFL team's football training camp in Spartanburg, S.C., Thursday, Aug. 2, 2012. (AP Photo/Chuck Burton)

A worker paints lines on the football field at Wofford College where the Carolina Panthers hold the NFL team's football training camp, in Spartanburg, S.C., Friday, Aug. 3, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Haruki Nakamura (43) talks with head coach Ron Rivera during practice at the NFL team's football training camp in Spartanburg, S.C., Friday, Aug. 3, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton smiles during a drill in practice at the NFL team's football training camp in Spartanburg, S.C., Monday, July 30, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Andre Neblett cools off during practice at the NFL team's football training camp in Spartanburg, S.C., Monday, July 30, 2012. (AP Photo/Chuck Burton)

Carolina Panthers quarterback Cam Newton throws a pass during practice at the NFL team's football training camp in Spartanburg, S.C., Monday, July 30, 2012. (AP Photo/Chuck Burton)

Carolina Panthers quarterback Cam Newton smiles as he rolls out in a drill during practice at the NFL team's football training camp in Spartanburg, S.C., Monday, July 30, 2012. (AP Photo/Chuck Burton)

A Carolina Panthers fan holds up a large image of quarterback Cam Newton during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers head coach Ron Rivera speaks to the media before the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers head coach Ron Rivera speaks to the media before the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers head coach Ron Rivera speaks to the media before the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Louis Murphy (83) runs a drill during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Louis Murphy (83) directs during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton prepares to throw a pass during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Louis Murphy (83) reaches in vain for a pass during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers owner Jerry Richardson watches practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton (1) scrambles during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton, right, talks with team owner Jerry Richardson, left, during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Ron Edwards runs a drill during practice at the NFL team's football training camp in Spartanburg, S.C., Saturday, July 28, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Steve Smith arrives for the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. Smith announced he is donating $100,000 to help the survivors of the movie-theater shooting in Colorado pay for medical expenses.(AP Photo/Chuck Burton)

Carolina Panthers' Steve Smith arrives for the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. Smith announced he is donating $100,000 to help the survivors of the movie-theater shooting in Colorado pay for medical expenses.(AP Photo/Chuck Burton)

Carolina Panthers' Steve Smith arrives for the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. Smith announced he is donating $100,000 to help the survivors of the movie-theater shooting in Colorado pay for medical expenses.(AP Photo/Chuck Burton)

Carolina Panthers' Greg Olsen carries bedding as he arrives at Wofford College for the beginning of the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Derek Anderson arrives at Wofford College for the beginning of the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Thomas Davis arrives at Wofford College for the beginning of the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Andre Neblett arrives at Wofford College for the beginning of the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Jamel Brandon, of E&S Security, brings a safe into a dormitory building for Carolina Panthers players to use, as they arrive at Wofford College for the beginning of the NFL team's football training camp in Spartanburg, S.C., Friday, July 27, 2012. (AP Photo/Chuck Burton)

Carolina Panthers players meet on the field before practice at the NFL team's football training camp in Spartanburg, S.C., Sunday, July 29, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Jon Beason directs teammates during practice at NFL football training camp in Spartanburg, S.C., Sunday, July 29, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Sione Fua, left, runs past Ogemdi Nwagbuo, right, during practice at the NFL team's football training camp in Spartanburg, S.C., Sunday, July 29, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Thomas Davis, left, talks with James Anderson, right, during practice at the NFL team's football training camp in Spartanburg, S.C., Sunday, July 29, 2012. (AP Photo/Chuck Burton)

Carolina Panthers defensive coordinator Sean McDermott shouts to players during practice at the NFL team's football training camp in Spartanburg, S.C., Sunday, July 29, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Thomas Davis (58) talks with a coach during practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

Robin Wallace, of Waxhaw, N.C., looks for autographs from Carolina Panthers players practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Cam Newton catches a ball during practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

Carolina Panthers head coach Ron Rivera signs autographs before practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)

Carolina Panthers' Brandon LaFell, left, talks with a coach during practice at the NFL team's football training camp in Spartanburg, S.C., Tuesday, July 31, 2012. (AP Photo/Chuck Burton)