Detroit Lions head coach Jim Schwartz directs during NFL football training camp in Allen Park, Mich., Tuesday, July 31, 2012. (AP Photo/Carlos Osorio)

Detroit Lions general manager Martin Mayhew addresses the media before practice at their NFL football training camp in Allen Park, Mich., Tuesday, July 31, 2012. (AP Photo/Carlos Osorio)

Detroit Lions running back Kevin Smith warms up before NFL football training camp in Allen Park, Mich., Tuesday, July 31, 2012. (AP Photo/Carlos Osorio)

Detroit Lions tackle Riley Reiff, right, pushes offensive guard Jacques McClendon during NFL football training camp in Allen Park, Mich., Monday, Aug. 6, 2012. (AP Photo/Carlos Osorio)

Detroit Lions defensive end Cliff Avril runs through drills during NFL football training camp in Allen Park, Mich., Monday, Aug. 6, 2012. (AP Photo/Carlos Osorio)

Detroit Lions defensive end Cliff Avril adjusts his helmet during NFL football training camp in Allen Park, Mich., Monday, Aug. 6, 2012. (AP Photo/Carlos Osorio)

Detroit Lions defensive tackle Nick Fairley talks to a teammate during NFL football training camp in Allen Park, Mich., Monday, Aug. 6, 2012. (AP Photo/Carlos Osorio)

Detroit Lions defensive line coach Kris Kocurek instructs during NFL football training camp in Allen Park, Mich., Monday, Aug. 6, 2012. (AP Photo/Carlos Osorio)

Detroit Lions tackle Riley Reiff, runs through drills during NFL football training camp in Allen Park, Mich., Monday, Aug. 6, 2012. (AP Photo/Carlos Osorio)

FILE - This July 31, 2012 file photo shows Detroit Lions general manager Martin Mayhew addressing the media before practice at their NFL football training camp in Allen Park, Mich. After being a league laughingstock for years, including being bad enough to become the NFL's first 0-16 team in 2008, the Lions are coming off a breakout season. (AP Photo/Carlos Osorio, File)