Calvin Johnson retirement: NFL Hall of Famers who retired early - Sports Illustrated
Calvin Johnson - Wikipedia
Lions great Calvin Johnson, 30, retires from NFL
Calvin Johnson on thanking Lions in his Hall speech: I've got nothing to say : r/detroitlions
Calvin Johnson says in Hall of Fame speech he played most of career with back injury: 'The pain never left'
Lions great Calvin Johnson, 30, retires from NFL
Mega-gone: Calvin Johnson retires from NFL at age 30
Calvin Johnson: I wanted to play elsewhere, Lions wouldn't let me : r/nfl
Calvin Johnson Retires, Leaves Behind Near-Impossible Legacy to Match, News, Scores, Highlights, Stats, and Rumors
Calvin Johnson Officially Retires From the NFL, News
It's true: Lions' Megatron Calvin Johnson will retire from football at age 30
Detroit Lions receiver Calvin Johnson ends brilliant NFL career at age 30, Detroit Lions
Paul Klee: With 30th birthday on the horizon, Demaryius Thomas reflects on Broncos, health and, yes, quarterbacks, Sports
Calvin Johnson: I wanted to play elsewhere, Lions wouldn't let me : r/nfl
Calvin Johnson Explains Why He Retired After the 2015 Season