Calvin Johnson brings an end to nine-year career with Detroit Lions, NFL News
Would Calvin Johnson really pull a Barry Sanders and walk away from football? - The Washington Post
Detroit Lions Star Wide Receiver Calvin Johnson Unexpectedly Retires
Ex-Lions star Calvin Johnson reveals that he used to break one particular NFL rule after every game
Calvin Johnson rooting for Dan Campbell despite fallout with Detroit Lions
Megatron: Lions star WR Calvin Johnson retires after 9 seasons
Detroit Lions star WR Calvin Johnson retires after 9 seasons
Johnson remarkably candid in E:60 interview
Calvin Johnson: Detroit Lions WR retires - Sports Illustrated
Calvin Johnson Explains Why He Retired After the 2015 Season
Calvin Johnson opens up about his retirement
Like almost everything he does, Calvin Johnson's camp is different - ESPN - Detroit Lions Blog- ESPN
Lions' Calvin Johnson makes 'difficult decision' to retire
Dallas Cowboys: Imagine Calvin Johnson wearing the Star
Matthew Stafford: Lions will be 'tougher' for NFL defenses without WR Calvin Johnson