Breaking down the Eagles’ defense by cash and cap expenditures

The Philadelphia Eagles are one of the most consistently successful franchises in the NFL, and have a proven track record of success since Nick Sirianni took the helm alongside general manager Howie Roseman. That, plus a dominant Super Bowl win in February, make the Eagles an obvious model for other teams to follow. But what exactly is it that the Eagles do that leads to so many wins?

The reality is that it’s a combination of things: coaching, roster management, excellent drafting, and savvy moves in free agency. Some of those can be replicated by other teams, while others can’t – at least, not easily. Every GM thinks they’re going to draft good players and nail their free agency signings,…