Drew Brees
It may seem strange to call this a career revival because Brees only spent four seasons in San Diego. His time there divides NFL fans because he showed potential but he also suffered injuries and poor form. But he transcended to another level when he joined Sean Payton in New Orleans.

Brees helped the Saints to the first Super Bowl win in their history as he sealed icon status. Meanwhile, he broke more passing records than we can keep track of. He went from being a very good prospect to an elite superstar. Many people wonder what would have happened if he stayed in San Diego (via SBNation).