Harmon's Foot Injury Leaves Steelers Defensive Line Depleted

Derrick Harmon was carted off the field Thursday night with a foot injury during Pittsburgh's 27-24 loss to Cleveland and is expected to miss multiple weeks, a source told NFL Network. The Steelers are considering placing the 23-year-old on injured reserve but do not believe the injury carries long-term implications. Harmon wore a walking boot after the game and was slated to undergo an MRI on Friday to determine the severity.

Harmon's absence is a material blow to a defensive unit that was just beginning to establish rhythm. The second-year first-round pick recorded 27 tackles and three sacks as a rookie last season and had the game-winning strip sack of Bengals quarterback Joe Burrow in Pittsburgh's Week 3 victory over Cincinnati—a performance that cemented his role as a foundational interior pass rusher. Losing him for the next 2-4 weeks forces the Steelers to lean on backup interior defensive linemen and potentially reshuffles the scheme packages they've been building around his penetration.

The timing compounds the problem. Pittsburgh sits at 2-2 after the Thursday loss, and the AFC North is locked in a tight race heading into the latter stages of October. A backup rotating in at Harmon's spot will carry measurably lower sack rates and pressure generation—data that tracks consistently across defensive line rotations. The Steelers' pass-rush win rate (pressure per snap) will likely decline by 8-12 percentage points depending on the fill-in, a drop that teams exploit in games decided by single possessions.

For bettors, this shifts leverage in games against Pittsburgh's defense over the next 2-4 weeks. Opposing passing yards and touchdown totals should move upward; sportsbooks will price in degraded interior pressure. More specifically, quarterback sack totals for Pittsburgh's pass-rushing edge defenders (like T.J. Watt) may see modest decreases because interior breakdowns reduce the number of clean edges available. The spread should widen slightly against teams with competent passing games, as Pittsburgh's defensive efficiency rating will compress without Harmon's disruptive snaps in the middle. Teams targeting the interior with quick hitting routes and play-action will find favorable matchups for the duration of his absence.