Former NFL RB Chris Johnson, known as CJ2K for his 2,000 yards for Titans in '09, reveals he has ALS

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.Johnson, 40, spent 10 seasons in the league and last pl...