Mark Sanchez
These days. most people think of the butt fumble when they hear Sanchez’s name. It’s a bit harsh because the quarterback wasn’t as bad as some fans think. He helped the Jets to back-to-back AFC Championship games before everything went wrong for him and the franchise.
After he quit the jets he joined the Eagles and had the chance to be the starter. He didn’t play badly but failed to secure the jersey and this set him on a nomadic road around the NFL. It was unfortunate that he held on for so long but teams valued him as a backup option (via The Spun).