Former quarterback Colin Kaepernick files grievance against NFL owners

Colin Kaepernick to hold public workout for teams: NFL

Roger Goodell says NFL should rehire Colin Kaepernick

Long: Kaepernick being blackballed would be a problem

Colin Kaepernick breaks his silence, sends message to players still supporting him

Kaepernick less controversial as a starter than backup?

Inside Colin Kaepernick's Road to Activism