Ball opened 2014 as Denver’s starting tailback, but a groin injury in Week 5 sidelined him for all but one of the team’s remaining games.
Ball, 24, has played in a total of 21 games over his two-year career. He’s scored five times while averaging 4.2 yards per carry.
The Broncos took Ball in the second round of the 2013 NFL draft.
He rushed for a total of 3,753 yards in his final two years at Wisconsin.
- Kenny Ducey