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Calvin Johnson opens up about his retirement
Lions great Calvin Johnson, 30, retires from NFL
NFL opinion: Can Calvin Johnson be the best ever? - Mike Revell
Lions great Calvin Johnson retires at 30 after prolific NFL career
Lions' Calvin Johnson makes 'difficult decision' to retire
Lions great Calvin Johnson, 30, retires from NFL
Calvin Johnson - Wikipedia
As he turns 30, Megatron still blessed with many gifts
Detroit Lions receiver Calvin Johnson ends brilliant NFL career at
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Detroit Lions receiver Calvin Johnson ends brilliant NFL career at
Pro Football Hall of Fame receiver Calvin Johnson in Class of 2021