Detroit Lions receiver Calvin 'Megatron' Johnson retires from the NFL at age 30 - Los Angeles Times
Barry Sanders believes Lions, Calvin Johnson 'can mend things'
Detroit Lions star WR Calvin Johnson retires after 9 seasons – The Mercury
Calvin Johnson brings an end to nine-year career with Detroit Lions, NFL News
Megatron isn't coming back to the NFL, has taken up surfing
Detroit Lions WR Calvin Johnson happy to be in the NFL record book
Detroit Lions: Calvin Johnson elected to Pro Football Hall Of Fame
Pro Football Hall of Fame receiver Calvin Johnson in Class of 2021
Detroit Lions Star Wide Receiver Calvin Johnson Unexpectedly Retires
Calvin Johnson battles to help Detroit Lions roar in Wembley NFL game, NFL
Calvin Johnson leads 6 former Lions players to make first cut for Pro Football Hall of Fame's 2021 class