The Facts: Chris Mortensen of ESPN reports that Ballard tore his Achilles tendon during the workout.

Diehards Line:That sets up another lost season for Ballard, who tore his ACL in the first week of the 2013 season and missed the remainder of the season. It also leaves the Colts looking a bit thin at the position heading into the preseason. Trent Richardson's 2013 shortcomings are well documented and Ahmad Bradshaw ended last season on injured reserve with a neck injury (he also has a history of foot trouble). Dan Herron, Chris Rainey and Zurlon Tipton round out the running back group. As PFT's Josh Alper suggests, Michael Bush, Felix Jones, Ronnie Brown and Willis McGahee are some unsigned veteran options that could be of interest to the Colts if Ballard's season is indeed over.