Carolina Panthers quarterback Cam Newton, left, tries to slip away from Philadelphia Eagles defensive tackle Fletcher Cox during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Carolina Panthers quarterback Cam Newton, right, is hit by Philadelphia Eagles linebacker Mychal Kendricks after a run during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Eagles' Michael Vick passes during the first half of a preseason NFL football game against the Carolina Panthers, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Carolina Panthers running back DeAngelo Williams is tackled by Philadelphia Eagles defensive end Cedric Thornton during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Carolina Panthers quarterback Cam Newton passes during the first half of a preseason NFL football game against the Philadelphia Eagles, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Eagles' Nick Foles (9) scores a touchdown as Carolina Panthers' Luke Kuechly defends during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Michael Perez)

Philadelphia Eagles quarterback Nick Foles, right, tries avoid Carolina Panthers defensive end Greg Hardy during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Carolina Panthers quarterback Cam Newton, left, and Philadelphia Eagles quarterback Michael Vick meet after a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. Philadelphia won 14-9. (AP Photo/Matt Rourke)

Carolina Panthers quarterback Jimmy Clausen, center right, tries to get past Philadelphia Eagles defensive end Everette Brown during the second half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. The Eagles won 14-9. (AP Photo/Michael Perez)

Philadelphia Eagles coach Chip Kelly, left, meets with Carolina Panthers coach Ron Rivera after a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. Philadelphia won 14-9. (AP Photo/Matt Rourke)

Philadelphia Eagles' Derek Carrier, right, tries to break free of Carolina Panthers safety D.J. Campbell during the second half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Carolina Panthers cornerback Josh Norman (24) intercepts a pass intended for Philadelphia Eagles wide receiver DeSean Jackson (10) as cornerback Captain Munnerlyn (41) and safety Charles Godfrey (30) nam ja thdefend during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Eagles cornerback Brandon Boykin, right, breaks up a pass intended for Carolina Panthers wide receiver David Gettis during the second half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Eagles' Michael Vick, left, is tackled by Carolina Panthers defensive end Wes Horton during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)

Philadelphia Eagles quarterback Michael Vick, center, is tackled by Carolina Panthers defensive end Mario Addison, left, and safety Mike Mitchell during the first half of a preseason NFL football game, Thursday, Aug. 15, 2013, in Philadelphia. (AP Photo/Matt Rourke)