The Denver Broncos confirmed Monday that linebacker Von Miller is out for the season with a torn ACL in his right knee.
Miller was injured Sunday in the first quarter of the Broncos' 37-13 win over the Houston Texans.
The Broncos had to make several adjustments on defense without Miller. He was replaced in the base defense by strongside linebacker Nate Irving. On passing downs, Shaun Phillips, Robert Ayers and Jeremy Mincey were rotated into Miller's defensive end position.
Surgery will be scheduled in about two weeks and a recovery time of six months is expected. Miller could be ready to practice on a limited basis by the start of training camp.
Miller had five sacks in nine games this season. He had 30 in the previous two seasons, making the Pro Bowl both times.
He was suspended the first six games of this season for violating the NFL's substance-abuse policy and was arrested for missing court appearances for speeding violations.