The second-year running back will undergo an appendectomy Monday that will sideline him for the rest of training camp and the preseason, NFL Media Insider Insider Ian Rapoport reported, per a Broncos source. ESPN first reported the news. Ball is expected to be ready for the regular-season opener against the Indianapolis Colts.
Ball showed considerable promise in the back half of his rookie season and is expected to replace Knowshon Moreno as Denver's primary ball-carrier in 2014. Ball came in at No. 7 on Around The League's "Making The Leap" countdown.