Adam Hunger/USA Today Sports
Peyton Manning will announce his retirement on Monday, going out a Super Bowl winner and the most decorated quarterback in NFL history.Despite his easygoing persona, Manning reached his level of greatness by being incredibly competitive both on and off the field.
The intense anecdotes below include what he went through to keep playing after neck surgery, his sneaky first-quarterbacks meeting in college, and his crazy work ethic in high school.