The former Florida State defensive coordinator replaces Chris O’Leary, who was named defensive coordinator and safeties coach at Western Michigan.

Fuller, the former defensive coordinator at Florida State, is the newest member of Jim Harbaugh's coaching staff

Fuller spent five years in the defensive coordinator role from 2020-24 before being fired prior to the conclusion of a disastrous 2-10 season. The team's struggles also led to offensive coordinator Alex Atkins and wide receivers coach Ron Dugans, along with other staffers, searching for new jobs.

Fuller replaces Chris O'Leary, who left the Chargers to become the defensive coordinator and safeties coach at Western Michigan.

The Chargers have hired Adam Fuller as the team’s new safeties coach, according to ESPN’s Pete Thamel. Fuller will replace former safeties coach Chris O’Leary, who left to become the defensive coordinator at Western Michigan.

Sources: The Chargers are expected to hire Adam Fuller as the team’s new safeties coach. He’s a veteran college defensive coordinator with stops at Florida State, Memphis, Marshall and he also served as the head coach at Assumption College in 2008.

The Los Angeles Chargers today announced the addition of Adam Fuller as safeties coach to Head Coach Jim Harbaugh’s coaching staff.

The hire aligns with Harbaugh’s vision for a more physical and adaptable defense in 2025. With Fuller’s extensive knowledge of the defensive side of the ball, the Chargers are hoping he can take their defense to the next level as he has done many times before.