As great as the Redskins were, the Eagles may have been even more interesting. The 1991 Eagles completely lap the field in terms of defensive DVOA. Only the 2002 Bucs had a better pass defense, and only the 2000 Ravens had a better run defense, and the Eagles were much more balanced than either of those teams.
It’s crazy to imagine how few points the Eagles might have given up if they were playing with a halfway-decent offense instead of losing Randall Cunningham to a torn ACL in the first game of the season. The Eagles were stuck depending on an over-the-hill Jim McMahon for 11 starts, plus Jeff Kemp for two and Brad Goebel for two. McMahon actually wasn’t half bad, with 6.9% passing DVOA, but the other two quarterbacks were awful, especially Goebel who had no touchdowns with six interceptions. And the running game was dreadful, with 3.1 yards per carry as a team.
Still, the Eagles were fifth in the league in points allowed, and first in yards allowed by nearly 400 yards — and the team that was second in yards allowed is also on that top-ten defenses list, the 1991 New Orleans Saints. The Eagles allowed 3.9 yards per play, where no other team allowed fewer than 4.5. As bad as their running game was, their run defense was even better, allowing 3.0 yards per carry. Three-fourths of the starting defensive line was All-Pro (Reggie White, Jerome Brown, and Clyde Simmons). Linebacker Seth Joyner and cornerback Eric Allen made the Pro Bowl as well.