Detroit Lions: Calvin Johnson Officially Retires from NFL
Detroit Lions – Reaction to retirement of Calvin Johnson, a 'humble superstar' – The Oakland Press
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Lions: Calvin Johnson Reveals Brutal Health Reason He Retired From the NFL
Calvin Johnson Retires as Owner of Multiple NFL Records, News, Scores, Highlights, Stats, and Rumors
Calvin Johnson Is Officially Retiring From the NFL
Calvin Johnson (Character) - Giant Bomb
Calvin Johnson tells Detroit Lions 2015/16 NFL season was his last, NFL News
NFL Star Calvin Johnson Retiring
Calvin Johnson Announces Retirement
Lions WR Calvin Johnson Mulls Retirement; Could the Patriots Save Him? - Pats Pulpit