Johnson was born on July 10, 1984, in Gary, Indiana. As a kid, he won seven Pop Warner trophies and his nickname was "Double-J".[1]
As a senior in high school he was named All-State, All-Area and All-Conference.[2]
Shootings
As a teenager, Johnson left his aunt's home in Gary with his nephew (William M. Fields Jr.) and was caught in the crossfire of a gun battle about 100 yards from his location.[3][4]
A few years later during a pickup basketball game, Johnson fled with his cousins and later discovered his t-shirt had been grazed by a bullet.[3][4]
During the 2010 preseason, Johnson was placed on the Injured Reserve list, having broken his left thumb in the Week 1 preseason game against the St. Louis Rams. The injury allowed the Vikings to re-register returning quarterback Brett Favre to their 53-man roster.[8]
On September 2, 2011, he was waived by Minnesota.
Arizona Cardinals
The Arizona Cardinals signed him to their practice squad on September 20. He was promoted to the active roster on November 29. Johnson was waived on December 23, 2011. Johnson was added to the practice squad on December 28, 2011. He was waived on August 25, 2012.