Report: Calvin Johnson told Caldwell he's retiring
Release of Stephen Tulloch another hit to Detroit Lions leadership
Detroit Lions' Calvin Johnson joins this list of star athletes
Georgia Tech Alumni Magazine Vol. 94 No. 1 Spring 2018 by Georgia
Calvin Johnson opens up about his early retirement, Aaron Rodgers
Calvin Johnson considering retirement from NFL – The Talon
Calvin Johnson on concussions, injuries - Sports Illustrated
Calvin Johnson on concussions, injuries - Sports Illustrated
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