Horton suffered a torn Achilles in Monday's practice, Jonathan M. Alexander of the Houston Chronicle reports.
Analysis:The defensive end fell while rushing the quarterback during team drills and had to be helped off the field by trainers. Horton played on 243 defensive snaps and 251 special-teams snaps across 16 regular-season games last year, and he had been on track to make the final 53-man roster.
