Drew Bledsoe
It’s easy to forget that there was a time before Tom Brady was in New England. But Bledsoe was an excellent starter for the Patriots in his own right. He spent nine seasons with the franchise before Brady usurped him. Then he went to the Bills before finishing his career in Dallas.
Bledsoe’s performances were decent in his first season with the Cowboys but he held on for too long. The team benched him in favor of Tony Romo because he went through a rapid decline. Nobody saw it coming but the NFL is a cruel sport and this happens very quickly (via Audacy).