Tart has become one of the quiet reasons this defense can play physical. He does not need a big sack total to matter; he wins by controlling the run game, keeping the interior honest and making the ball harder to move. The extension shows the Chargers value that exact kind of dependable trench work.
Strengths: Strong run-defense profile, durable starting experience, physical interior presence and disruptive hands at the line. He is a credible anchor in multiple front looks.
Weaknesses: He is not a high-volume pass rusher, so his impact depends on surrounding pressure converting his interior work. He must sustain the run-defense level that earned the extension.