Calvin Johnson retires: 'I have played my last game of football
Detroit Lions receiver Calvin Johnson officially retires from NFL
Former Lions WR Johnson ready to join football royalty in Hall of
Calvin Johnson retires as the Lions' all-time leading receiver
NFL notes: Calvin Johnson tells Lions he's retiring, report says
Athletes who retired early
Calvin Johnson Announces Retirement from NFL
Report: Calvin Johnson told Lions he planned to retire
Calvin Johnson expected to retire
Agent: Still no decision on Calvin Johnson's future
Detroit Lions Star Wide Receiver Calvin Johnson Unexpectedly
Vikings React to Calvin Johnson's Retirement
Sports WebXtra: Lions wide receiver Calvin Johnson retires from NFL
Lions star WR Calvin Johnson, 30, retires after 9 seasons
Detroit Lions' Calvin Johnson is retiring and is 'at peace with it'