The Denver Post reports that Broncos RB Mario Fannin tore his Achilles tendon during Saturday's team scrimmage at Sports Authority Field at Mile High.
This is the second year in a row that Fannin, a second-year player out of Auburn, suffered a season-ending injury in training camp. He sustained a torn ACL on Aug. 5, 2011.
He signed with the Broncos last year as an undrafted free agent.