Broncos DE Billy Winn has suffered a torn ACL last night, a source tells Ian Rapoport of NFL.com (on Twitter). The Broncos braced themselves for the bad news when Winn was carted off of the field in Thursday night’s preseason game against the Bears. 
Winn was set to serve as Denver’s primary backup nose tackle behind Domata Peko. After he joined up with the Broncos last year, he proved to be a reliable, though unspectacular, reserve option. The 28-year-old appeared in all 16 regular season games (two starts) and played on roughly 30% of the Broncos’ defensive snaps. In that span, Winn had 19 tackles and one fumble recovery while grading as the league’s No. 97 interior defender among 127 qualifiers, per Pro Football Focus.
Losing Winn is not ideal, but the Broncos can turn to free agent addition Zach Kerr and Kyle Peko (cousin of Domata) for support in the middle.