Sports Fans: Has there ever been a quarterback who has experienced two bad years in their prime but rose above the adversity later on to become a champion?

I’m thinking perhaps Eli Manning fits this description? He’s coughed up a number of interceptions in his career yet has become a championship quater back. I feel like Philip Rivers is a top 10 QB, one of those where you think of the team and his name is the first player to pop up. I feel he’s in his prime still but had a rough last year and this year he’s tossing interceptions all over the place.

Help me think up other quarter backs who might fit the op!