​The Philadelphia Eagles keep much of their dealings close to the vest, but part of their business model seems clear, especially in how they want to build their roster. They typically invest heavily in the trenches, and they have done so since Andy Reid took over. This offseason, they did so again, offering extensions to two young interior defenders.Jordan Davis was taken care of first, inking a three-year, $78 million arrangement. Jalen Carter also cashed in on a record-breaking four-year, $152 million deal. The price tags signal confidence in what both offer, but they also carry heavy expectations. Davis and Carter are expected to help dictate games along Philadelphia’s defensive front.Nick Sirianni defends Jordan Davis and Jalen CarterWhen two young stars are promised the kind of coin Davis and Carter are making, no one wants to hear explanations for why opposing offenses keep finding room to operate. Monday night’s loss to the Dallas Cowboys offered another troubling example, and after another embarrassment, Philadelphia’s starting defensive tackles have come under fire.By now, most of you have seen the stat line. Philadelphia surrendered 204 rushing yards and failed to record a tackle for loss, quarterback hit, or sack. With Jalen Carter and Jordan Davis anchoring the interior, the expectation is the Eagles should be better equipped to disrupt opposing offenses. Instead, the defensive line has struggled to consistently control the line of scrimmage, and the team’s five-game losing streak has intensified scrutiny of a unit expected to be a strength.Head coach Nick Sirianni spoke with the media post-game and was asked directly whether Philadelphia was getting enough from its two defensive tackles. Rather than single them out after another disappointing performance, he pointed to their previous production and emphasized that the defensive breakdown involved more than two players.“I think you’ve seen those guys be disruptive and you’ve seen those guys make quite a bit of plays. Obviously, we’re all going to want plays back from tonight and moments back from tonight.”Sirianni points to a collective defensive failure. He acknowledged the magnitude of the Eagles’ run-defense problems but resisted pinning them on one player or position group. He cited defensive coordinator Vic Fangio, senior defensive assistant and defensive line coach Clint Hurtt, defensive ends and outside linebackers coach Jeremiah Washburn, inside linebackers coach Bobby King, and the players themselves as responsible.“When you give up the yards rushing like we did today, it’s not just one thing. Vic’s going to want plays back, Clint’s going to want plays back, Wash is going to want plays back, Bobby’s going to want plays back, and so is every player at their position. But I think you’ve seen them make a lot of plays throughout the year, and tonight, hats off to the Cowboys.”The explanation aligns with Sirianni’s broader postgame comments about Philadelphi