Lions great Calvin Johnson, 30, retires from NFL
NFL Notebook: Lions' Calvin Johnson retires - West Central Tribune
It's true: Lions' Megatron Calvin Johnson will retire from football at age 30
Calvin Johnson statement on retirement decision
Calvin Johnson claims Lions president immediately asked about bonus upon retirement - Pride Of Detroit
Calvin Johnson's retirement statement: 'At peace' with decision
Lions' star WR Calvin Johnson to retire - Bucs Report
Calvin Johnson Has Telling Update On Feud With Lions - The Spun: What's Trending In The Sports World Today
Calvin Johnson, Quiet and Classy, Retires the Way He Played - The New York Times
Lions star WR Calvin Johnson retires after 9 seasons – Daily Freeman
NFL Star Calvin Johnson Retiring
Pat Caputo – For Detroit Lions, for himself, timing perfect for Calvin Johnson to retire – The Oakland Press
Detroit Lions star WR Calvin Johnson retires after 9 seasons
Calvin Johnson retires: 'I have played my last game of football' - ABC7 Chicago
Calvin Johnson was a PFF all-timer before early retirement, PFF News & Analysis