Life - Art Schlichter, Indianapolis, gambling, suspended for one year on June 1983. Was released following the 1985 season; pleaded guilty to an illegal gambling charge April 1, 1987. NFL Commissioner Pete Rozelle did not reinstate after Schlichter applied for permission to re-sign. (AP Photo/Lennox McLendon)

Life: Stanley Wilson, Cincinnati, substance abuse, suspended Jan. 22, 1989; permanently banned May 15, 1989. (NFL Photos)

Life - Earl Ferrell, Phoenix, 1990, substance abuse, voluntarily retired. (AP Photo/Rusty Kennedy)

Life (reinstated after 1 year): Dexter Manley, Washington, substance abuse, Nov. 18, 1989. (NFL Photos)

Life (reinstated after 1 year) - Frank Warren, New Orleans, substance abuse, April 13, 1990. (AP Photo/Al Golub)

Life (reinstated after 1 year): Terry Taylor, Detroit, substance abuse, Sept. 20, 1990. (Paul Spinelli/Associated Press)

Two-plus seasons: Plaxico Burress, N.Y. Giants, carrying a gun, shooting self in leg. Reinstated in July 2011 after serving two years in jail. (AP Photo/Rob Carr)

Two-plus seasons: Michael Vick, Atlanta, dogfighting, 2007; reinstated in Week 3 of 2009. (AP Photo/Nick Wass)

Two seasons: Tony Collins, Indianapolis, substance abuse, Aug. 13, 1988-July 11, 1990. (NFL Photos)

Two seasons: R. Jay Soward, Jacksonville, substance abuse (four games), June 8, 2001; extended another six games Oct. 10, 2001 by NFL. Then Jaguars suspended him for four games, personal conduct, Dec. 7, 2001. Suspended for the next season Jan. 9, 2002. (AP Photo/Gerard Burkhart)

1 year, 10 months - Darrell Russell, Oakland, substance abuse, Jan. 2, 2002-Oct. 28, 2003. Suspended indefinitely July 26, 2004 for substance abuse, two weeks after cut by Tampa Bay. (AP Photo/Al Golub)

1 1/2 years - Dale Carter, Denver, substance abuse, April 25, 2000-Nov. 7, 2001. (AP Photo/G. Newman Lowrance)

One season: Donte Stallworth, DUI manslaughter, Aug. 13, 2009. (AP Photo/Evan Vucci)

One Season: Leon Lett, Dallas, substance abuse, final three games of 1996 and the following season, Dec. 3, 1996. (AP Photo/Greg Trott)

One Season: Paul Hornung, Green Bay, gambling, 1963 season. (Associated Press)

One season: Alex Karas, Detroit, gambling, 1963 season. (NFL Photos)

One Season: Mike Reilly, L.A. Rams, substance abuse, 1983. (AP Photo/Tom Gannam)

One season: Tim Worley, Pittsburgh, substance abuse, April 29, 1992. (NFL Photos)

One Season: Chuck Levy, Arizona, substance abuse, Aug. 25, 1995. (AP Photo/Al Golub)

One season: Carlton Haselrig, N.Y. Jets, substance abuse, Nov. 27, 1995. (AP Photo/NFL Photos)

One season: Roosevelt Potts, Indianapolis, substance abuse, Aug. 20, 1996. (NFL Photos)

One Season: Larry Webster, Baltimore, substance abuse, Aug. 20, 1996. (AP Photo/Al Golub)

One Season: Josh Evans, Tennessee, substance abuse, June 20, 2000. (AP Photo/John Russell)

One season: Tyrone Robertson, Buffalo, substance abuse, Dec. 10, 2002. (NFL Photos)

One Season: Onterrio Smith, Minnesota, substance abuse, June 7, 2005. (AP Photo/David Stluka)

One Season: Kendyll Pope, Indianapolis, substance abuse, Aug. 31, 2005. (AP Photo/Koji Sasahara)

One season: Ricky Williams, Miami, substance abuse, April 25, 2006.(AP Photo/Tom DiPace)

One Season: Odell Thurman, Cincinnati, substance abuse (four games), July 26, 2006; extended for one year Sept. 27, following his arrest on a drunken-driving charge. (AP Photo/David Stluka)

One Season: Koren Robinson, Green Bay, substance abuse, Oct. 17, 2006.(AP Photo/Charlie Neibergall)

One Season: Adam "Pacman" Jones, Tennessee, personal conduct, April 10, 2007. (AP Photo/Paul Spinelli)