Chris Johnson, one of nine players in NFL history to rush for more than 2,000 yards in a season who made the Pro Bowl in each of his first three years with the Tennessee Titans, revealed in a television interview aired Monday that he has ALS.

Chris Johnson, a former running back with the Tennessee Titans, New York Jets and Arizona Cardinals who once rushed for more than 2,000 yards in a single season, has revealed that…

Johnson shared his diagnosis in an exclusive interview with "GMA" co-anchor Michael Strahan.

Johnson was drafted by the Tennessee Titans in 2008

Former NFL running back Chris Johnson revealed that he has been diagnosed with sporadic Amyotrophic Lateral Sclerosis at the age of 39.