Harrison (knee) has been ruled out ahead of Sunday's matchup against the Patriots, Marc Raimondi of ESPN.com reports.
The Ohio State product downgraded from a limited practice Thursday to a DNP on Friday and is now in line to miss his second consecutive game due to a knee injury. While Harrison remains out in Week 9, expect Brandon Dorlus to start opposite David Onyemata on the Falcons' defensive line.