Favre, the Green Bay Packers legend, famously held a teary retirement press conference in 2008, only to change his mind months later and join the New York Jets after a trade. He toyed with retirement again following the 2009 season, then joined the Minnesota Vikings for two seasons.

Jets (2008): 3,472 yards, 22 TDs, 22 INTs

Vikings (2009): 4,202 yards, 33 TDs, 7 INTs

Vikings (2010): 2,509 yards, 11 TDs, 19 INTs

After a prolific 12-year career with four franchises, "Primetime" retired following the 2000 season. He returned in 2004 with the Baltimore Ravens.

Ravens (2004): 3 INTs, 1 TD

Ravens (2005): 2 INTs

The power back hung up his cleats a year after the Seahawks called for a pass from the 1-yard line in the Super Bowl. Following a one-year sabbatical, he returned to the Raiders, his beloved hometown team.

Raiders (2017): 891 rush yards, 7 TDs

Raiders (2018): 376 rush yards, 3 TDs

After retiring in 1995, Cunningham returned in 1997 as a Vikings backup quarterback. Then he took over the starting role in 1998, leading Minnesota to a league-best 15-1 record.

Vikings (1997): 501 yards, 6 TDs, 4 INTs

Vikings (1998): 3,704 yards, 34 TDs, 10 INTs

Vikings (1999): 1,475 yards, 8 TDs, 9 INTs

Cowboys (2000): 849 yards, 6 TDs, 4 INTs

Ravens (2001): 573 yards, 3 TDs, 2 INTs

Rather than face a suspension in 2004, Williams retired, then returned to football in 2005. Another ban sent him to Canada, and he came back to the NFL with the Dolphins in 2007.

Dolphins (2007): 15 yards, 0 TDs

Dolphins (2008): 659 yards, 4 TDs

Dolphins (2009): 1,121 yards, 11 TDs

Dolphins (2010): 673 yards, 2 TDs

Ravens (2011): 444 yards, 2 TDs