Detroit Lions' Calvin Johnson is retiring and is 'at peace with it'
Calvin Johnson of Detroit Lions says he's evaluating future - ESPN
Calvin Johnson is a Hall of Fame wide receiver - Vintage Detroit Collection
The Detroit Lions made a major mistake not trading Calvin Johnson - Pride Of Detroit
Calvin Johnson - Wikipedia
Calvin Johnson will reportedly retire from the Detroit Lions
Lions: Calvin Johnson Reveals Brutal Health Reason He Retired From the NFL
With Johnson's likely retirement, search for new No. 1 WR begins, PFF News & Analysis
Ex-Lions star Calvin Johnson reveals that he used to break one particular NFL rule after every game
Lions' Calvin Johnson makes 'difficult decision' to retire
When Calvin Johnson retired, he left a Hall of Fame legacy that hopefully won't be forgotten
Megatron May Retire, But He Isn't Washed Up
NFL notes: Calvin Johnson tells Lions he's retiring, report says - The Boston Globe
Calvin Johnson (Character) - Giant Bomb
Where is Calvin Johnson now? What the Lions legend is doing after his early 2015 retirement