In January 2026, the Los Angeles Chargers officially appointed Chris O'Leary as their new defensive coordinator. O'Leary's previous experience includes serving as the Chargers' safeties coach in the 2024 season and most recently as the defensive coordinator at Western Michigan. This transition follows the departure of Jesse Minter, who accepted the head coaching position with the Baltimore Ravens, prompting the need for a new coordinator. O'Leary's familiarity with the team’s defensive scheme, coupled with his previous success, positions him well to continue the Chargers' defensive strategy. During his time with the Chargers, he played a crucial role in the implementation of Minter’s defensive principles, contributing significantly to the team's performance, which ranked seventh in defensive EPA/play in 2024. Notably, O’Leary garnered attention for his effectiveness in developing players, particularly in working with various coverage assignments. This background in coaching affirms his capability to lead the defensive unit effectively, as the Chargers aim to build on their recent accomplishments and potentially set him on a path toward becoming a head coach in the future. Overall, the Chargers made a strategic decision to maintain continuity in their defensive philosophy by promoting O'Leary, reflecting confidence in his abilities and the system established during Minter's tenure. This development also exemplifies the organization's commitment to fostering talent from within, recognizing the importance of stability as they look forward to the upcoming season.