Vikings React to Calvin Johnson's Retirement
Calvin Johnson's talent was squandered by a terrible organization
Calvin Johnson Officially Retires From the NFL, News
Bell: Only the NFL grind could stop Calvin Johnson
Lions WR Calvin Johnson retires from NFL – New York Daily News
Johnson Named to NFL All-Decade Team – Football — Georgia Tech
Detroit Lions receiver Calvin Johnson officially retires from NFL
Calvin Johnson: Detroit Lions Wide receiver retires
Calvin Johnson full-page retirement letter. : r/nfl