In this photo, San Francisco 49ers running back O.J. Simpson is escorted from the field by Atlanta Police after ending his career in the NFL on Dec. 17, 1979 at Atlanta Fulton County Stadium in Atlanta, Ga. One of the NFL's top running backs in 1970s with the Buffalo Bills, Simpson was later acquitted of the 1994 murder of his ex-wife, Nicole Brown Simpson, and Ronald Goldman, after one of the most publicized criminal trials in history. In 1997, a civil court awarded a judgment against him for their wrongful deaths, but little of the $33.5 million penalty has been paid. In 2008, Simpson was found guilty of armed robbery and kidnapping, and must serve the first nine years of a 33-year sentence without a chance of parole.
Colts' quarterback Art Schlichter was suspended indefinitely in 1983 by NFL Commissioner Pete Rozelle for gambling on NFL games a year earlier. The quarterback was reinstated for the '84 season, but later admitted gambling while under suspension. He was released five games into the '85 season. In 1987, he pleaded guilty to illegal gambling and Rozelle did not reinstate him after Schlichter applied for permission to re-sign. He was sentenced to 10 years, seven months in prison for his involvement in a million-dollar ticket scam. In this 2009 photo, Schlichter signs copies of his book, "Busted."
Suspended indefinitely without pay by Commissioner Roger Goodell in 2007 when Vick pleaded guilty to dogfighting conspiracy. The Atlanta Falcons quarterback was sentenced to 23 months in federal prison. A week after being released from federal custody on July 20, 2009, and having been released by the Falcons, he was conditionally reinstated by Goodell. Less than three weeks later, he signed with the Philadelphia Eagles, and played his first regular-season game in nearly three years on Sept. 27 of that year. (AP)