Denver Broncos starting defensive end Jason Hunter has suffered a triceps tear that will sideline him at least two months, according to the Denver Post.

Hunter became the second starter to suffer a serious injury during Tuesday's practice after right guard Chris Kuper fractured his left forearm. Kuper will miss 4-to-6 weeks.

The 28-year-old Hunter suffered his injury while slamming into a blocking sled during drills, according to the report.

Hunter had moved ahead of Robert Ayers in the lineup just two weeks ago.