Perhaps an obvious pick, but my choice is Alex Smith. I had so much hope when we drafted him, even though I wanted Rodgers personally. I was devastated by the time 2008 came and went. Then, he sticks around, takes over at halftime of the 2009 Texans game, and really just rose from the ashes. There was the "We want Carr" chant, and his awesome response by tossing two TDs immediately thereafter. He stuck around for Harbaugh and really began to show his full potential. The playoff TD pass to beat the Saints (and really that whole game) was the full phoenix taking flight, and the journey seemed complete. Then, after playing even better in 2012, he still managed to handle the benching (which I agreed with and still do) like a complete pro and did great things for KC and then briefly for Washington. Dude just showed top-notch character, thick skin, and became a real baller at the end.
I have some other candidates too, but I'm curious to hear about others' choices. Have at it.
[ Edited by kelson49er on Dec 13, 2019 at 8:42 AM ]