Lions wide receiver Calvin Johnson retires from NFL
Lions' Calvin Johnson Retires From NFL - CBS Chicago
Calvin Johnson says dad talked him into staying final season, rules out return
Calvin Johnson says he learned to play through concussions during his career with the Lions - The Washington Post
Calvin Johnson on Life After NFL: 'I Can Honestly Say That I Don't Miss Playing', News, Scores, Highlights, Stats, and Rumors
Calvin Johnson pens letter to Lions fans: 'Michigan will forever be my home' - Pride Of Detroit
Detroit Lions' Wood: Calvin Johnson still unsure about retirement
Calvin Johnson claims Lions president immediately asked about bonus upon retirement - Pride Of Detroit
Report: Lions trying to get an answer from Calvin Johnson before Wednesday - Pride Of Detroit
Ex-Lions star Calvin Johnson reveals that he used to break one particular NFL rule after every game
Bell: Only the NFL grind could stop Calvin Johnson
Calvin Johnson: 'I have played my last game'
Calvin Johnson retires from NFL