Colin Kaepernick will probably never play in the NFL again.
One knee during the national anthem of the 2016 season in protest of racial injustice and police brutality snowballed into a highly-politicized movement that kept him from a job.
However, the former San Francisco 49ers quarterback took them to Super Bowl XLVII, and he was considered one of the league's best starting quarterbacks and NFL players at the time.