There's a common misconception going around the city of Philadelphia that the Eagles had a bad defense last season. Not just a bad defense, but one of the worst defenses in the National Football League.
I'm honestly not sure where people got this idea from. Yes, the defense was expected to be very bad, but the brilliant work of the defensive coordinator and a few surprise players on the defensive side of the ball helped the Eagles finish 17th in the league in points allowed. That's the definition of average, and I think we all would have been very happy with average based on preseason expectations.
Although the Eagles need to improve on their pass rush, they ranked third in the league in turnovers and fourth in average yards allowed per run. They also allowed a cumulative passer rating of 82.3, using ColdHardFootballFacts.com's passer rating calculator, which ranks above average in this pass-happy era.
The Eagles have a number of young talented players who need to take a step forward in 2014 for this defense to become a top-10 or -12 unit. If they can, expect this team to contend for a Super Bowl title.
The following slides will predict the defensive statistics of every significant contributor for the team in 2014. I did not factor in injuries, but I did factor in potential benchings. Statistics like snaps played and passer rating allowed were found using Pro Football Focus (subscription required).