Calvin Johnson retires from NFL
Detroit Lions – Calvin Johnson closes in on another milestone
From the record to the 'Calvin Johnson Rule,' a career of big
Detroit Lions: Will Offense Be Better Without Calvin Johnson?
The Big Interview With Calvin Johnson - Sports Illustrated
Lions' Calvin Johnson through the years
Detroit Lions receiver Calvin Johnson ends brilliant NFL career at
Detroit Lions notes: Calvin Johnson could be game-time decision
Megatron retires at 30 — because he's smart
Lions star WR Calvin Johnson retires after 9 seasons – Daily Freeman
Calvin Johnson - Wikipedia