Lions star WR Calvin Johnson retires after 9 seasons – Daily Freeman
Calvin Johnson opens up on rift with Lions: 'It straight up stung
Detroit Lions: Calvin Makes Statement About Decision to Retire
Lions' receiver Johnson retires, minus the fanfare
Lions star WR Calvin Johnson retires after 9 seasons
Calvin Johnson: Detroit Lions WR retires - Sports Illustrated
Johnson 'at peace' with retiring from Lions and NFL
Freep] Calvin Johnson: Detroit Lions' offer shows team 'not
Calvin's retirement gives Lions $11M more for 2016
Full Calvin Johnson statement: 'Thank you all for everything'
NFL Notes: Report: Johnson told coach he will retire - Duluth News