Pettigrew suffered a torn ACL during Sunday's game against the Rams, NFL.com reports.
Pettigrew's rookie season in 2009 was ended prematurely by a torn ACL, so the 30-year-old's latest knee injury Sunday is something he's experienced before. No matter, Pettigrew won't be pleased by having his season ended early, and his seven catches (on 15 targets) for 67 yards and one touchdown this season evidence his steeply-declining production. With Pettigrew out, the Lions will hope even more that second-year tight end Eric Ebron can capitalize on added reps.