Calvin Johnson volunteers to mentor 1 Lions wide receiver
ESPN Report Says Calvin Johnson Is Retiring From The NFL
Fantasy impact of Calvin Johnson's retirement, PFF News & Analysis
Calvin Johnson: Detroit Lions Wide receiver retires
Megatron retires at 30 — because he's smart
Is Calvin Johnson a first-ballot Hall of Famer? The Athletic's voters weigh in - The Athletic
Arizona Cardinals extend thanks, respect to Calvin Johnson
Calvin Johnson Considering Retirement
Calvin Johnson likely saying goodbye to game he's so great at - Sports Illustrated
Calvin Johnson: Bigger, Stronger, Faster and, Maybe Soon, Retired - The New York Times
Are Detroit Lions and Calvin Johnson in a Game of Chicken?
NFL Notes: Report: Johnson told coach he will retire - Duluth News Tribune