Why did Calvin Johnson retire?
Pros and cons for top Detroit Lions draft prospects
Is Calvin Johnson coming back to the NFL? Megatron responds to questions regarding potential Lions return
NFL Star Calvin Johnson Retiring
Understanding Lions WR Calvin Johnson's quiet retirement - Sports Illustrated
Should Calvin Johnson Detroit Lions jersey be retired by Sheila Hamp - Sports Illustrated Detroit Lions News, Analysis and More
Lions reportedly got trade offers for retired WR Calvin Johnson, 'willing to listen'
Calvin Johnson's latest interview should squash any Patriots/Megatron ideas - Pats Pulpit
Calvin Johnson Says Playing for Lions Factored Into His Decision to Retire, News, Scores, Highlights, Stats, and Rumors
Jamie: Megatron's retirement a Calvin Johnson or Detroit Lions issue?