The Denver Broncos placed outside linebacker Von Miller on injured reserve due to a torn anterior cruciate ligament.
Miller got injured against the Houston Texans.
They promoted linebacker Brandon Marshall to the active roster from the prasctice squad.
Wide receiver Nathan Palmer was signed to the practice squad.
Marshall saw action in five games as a rookie for Jacksonville last season after being selected by the club in the fifth round out of Nevada.
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Aaron Wilson covers the Ravens for The Baltimore Sun.