Lions film review spotlights rookies Derrick Moore and Skyler Gill-Howard as run defense building block

The Detroit Lions are using preseason film to stress-test how quickly rookies Derrick Moore and Skyler Gill-Howard can hold their ground against the run, a core emphasis for a defense built on consistency at the line of scrimmage. In a film breakdown published Tuesday, the focus was not on big plays, but on the fundamentals that show up over multiple snaps: how each player fits the run picture, controls their spacing, and limits the kinds of lanes that can turn small gains into sustained drives.

The breakdown centers on what the Lions want from their young interior presence when offenses try to run through physical contact. For Detroit, run defense is also a weekly identity issue. If opponents can reliably move the ball on the ground, it changes down-and-distance math and reduces the defense’s ability to play with preferred leverage and rhythm.

Coach Dan Campbell addressed what would make the coaching staff feel better about the team’s 2026 direction, tying the preseason evaluation process to the question of what must be confirmed on the field. The film review frames Moore and Gill-Howard’s run-defense work as part of that larger assessment: whether rookies can translate coaching points into decision-making and sustained effort in real-game speed.

Moore and Gill-Howard’s inclusion in this specific analysis suggests the staff sees their roles as more than developmental bystanders. Even without relying on one-off moments, the Lions can gain real information by watching whether rookies can maintain assignment discipline while still playing aggressively through contact. That is especially important early in camp and preseason, when teams are still sorting out which matchups feel stable and which ones require adjustments.

The larger lesson from a run-defense film review is that evaluation is cumulative. A rookie does not have to dominate every rep to be useful, but the Lions will look for patterns that match coaching: getting depth and leverage right before the ball arrives, securing their hand placement, and reacting on time when blocking schemes shift. Those are the traits that can make a difference even when a play does not end with a tackle.

What to watch next is how the coaching staff uses this information over the remainder of the preseason. If Moore and Gill-Howard continue to show control versus gap and inside-zone looks, they can become steady pieces in Detroit’s defensive front rather than just rotation options. If the issues are more frequent, it will likely steer how the Lions manage snaps and run-defense packages as the season approaches.

For fans, this type of film-driven reporting is a reminder that the preseason is not only about individual highlights. It is also about proving the basics that allow a defense to function, especially in the run phase where one error can force the rest of the unit into more complicated coverage and pass-rush calls.