Brett Favre leaving an incredible career behind for—uh—greener pastures isn't anything new. Here are 10 other athletes who traded a legendary legacy for a brief stint in an ill-fitting uniform.
Legend With: San Francisco 49ers (1979–1992) Retired With: Kansas City Chiefs (1993–1994) A legend in 'Cisco for directing some of the most amazing comebacks in NFL historyincluding "the Catch" to clinch the '82 NFC championshipMontana lost his starting QB spot to Steve Young after surgery on his throwing arm kept him out during the '91 and '92 seasons. A Favreian itch in his jockstrap landed him in KC, which kept him from invading TV broadcast booths for another two years.