FOXBORO, MA - JANUARY 20: Head coach John Harbaugh and Joe Flacco #5 of the Baltimore Ravens celebrate after defeating the New England Patriots in the 2013 AFC Championship game at Gillette Stadium on January 20, 2013 in Foxboro, Massachusetts. The Baltimore Ravens defeated the New England Patriots 28-13. (Photo by Jim Rogash/Getty Images) (Photo by Jim Rogash/Getty Images)
Mike Preston gave quarterback Joe Flacco an A for his performance against the Patriots. His grades for the defensive line and linebackers were harsh.