Denver Broncos defensive end Jason Hunter is out at least two months with a torn triceps and might miss the entire season.
Hunter is the team's third defensive lineman to suffer a torn triceps at training camp in the last two years. Elvis Dumervil missed the 2010 season and Ty Warren missed last season.
Hunter had supplanted Robert Ayers as the starter at left end two weeks ago. He could be replaced by rookie Derek Wolfe, the team's top draft choice who had two sacks at Chicago last week, or Ayers.
Hunter was injured Tuesday, when starting right guard Chris Kuper broke his left forearm and rookie running back Ronnie Hillman aggravated his pulled right hamstring. Those injuries came a day after recently signed linebacker Keith Brooking (hamstring) got hurt.