Tiki Barber
In 1997, Barber was drafted by the New York Giants. By all field accounts, Barber's NFL career was a success. He got the Giants to a Super Bowl XXXV appearance and became the team's all-time leading rusher. Barber, however, surprised many when he decided to retire after the 2006 season. In 2007, the Giants won Super Bowl XLII without Barber.