The Los Angeles Chargers' defense is shaping up to be a force to be reckoned with in 2026. With free agency and the draft now in the rearview mirror, it's time to look ahead at what new defensive coordinator Chris O'Leary will bring to the table. The unit blends proven veterans, rising young stars, and a fresh scheme that has fans buzzing.

Up front, the defensive line looks rock-solid. Veteran run-stuffers Dalvin Tomlinson and Teair Tart will anchor the interior, providing the kind of push that makes life difficult for opposing offenses. On the edges, the Chargers boast a dynamic trio: perennial All-Pro Khalil Mack, rising star Tuli Tuipulotu, and first-round rookie Akheem Mesidor. That combination of experience and youth should keep quarterbacks on their toes all season long.

The second and third levels of the defense are equally exciting. Star safety Derwin James Jr. remains the heart and soul of the secondary, capable of making game-changing plays from anywhere on the field. With a mix of returning starters and new additions, this group has the potential to be one of the league's most disruptive units.

While the regular season is still months away, the roster-building process is essentially complete. Here's our first projection of what the Week 1 starting defense might look like—a lineup that combines power, speed, and versatility to make the Chargers a serious contender.