From the Denver Post, this was the last thing Broncos fans needed to hear during training camp:

Head trainer Steve Antonopulos accompanied Dumervil to the locker room. Dumervil was holding his right arm tight against his chest, with his hand grasping the neck area of his jersey.

Dumervil and the Broncos pass rushers were participating in a one-on-one pass rush drill against offensive linemen when Dumervil was injured.

Sign a new contract, start training camp, and then get injured. Not exactly the best line of progression.