Calvin Johnson admits Lions' losing helped him retireIn an interview with ESPN, Calvin Johnson said all the losing with the Lions helped lead to his retirement from the NFL.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceIn an interview with ESPN, Calvin Johnson said all the losing with the Lions helped lead to his retirement from the NFL.Published Jul 12, 2017 | Modified Jul 12, 2017SI STAFFShare on FacebookShare on XHome/NFL