LOS ANGELES — The Chargers are hiring Western Michigan’s Chris O’Leary as the team’s defensive coordinator, it was announced Wednesday night.

O’Leary, who also was defensive coordinator at Western Michigan, returns to the Chargers after coaching the safeties in the 2024 season. In his lone season at Western Michigan, his defense ranked ninth in the FBS and second in the MAC in scoring defense (17.4 points allowed per game). O’Leary’s defense was also the MAC’s second-best unit in total net yards allowed per game (305.5), which ranked 19th in the nation.

Before the Chargers and Western Michigan, O’Leary spent six seasons at Notre Dame, starting as a defensive analyst before eventually becoming defensive backs and safeties coach, where he coached current Chargers cornerback Cam Hart.

O’Leary will be responsible for sustaining what has been one of the NFL’s best defenses for the past two seasons under former defensive coordinator Jesse Minter, who is now the Ravens’ head coach. Linebacker Daiyan Henley expressed excitement over the hire, posting to X, “The vibes are up,” shortly after the team’s announcement.

Last year, Minter guided the Chargers to the NFL’s fifth-ranked defense (285.2 yards per game). In 2024, his first season in Los Angeles, the Chargers led the league with the fewest points allowed (17.7 per game).

When Minter arrived in L.A. in 2024, he was taking over one of the league’s worst defenses, which in three years under former coach Brandon Staley ranked 30th in yards allowed per play (5.7), points (24.8) and rushing yards per game (134). Over two seasons under Minter, the Chargers ranked second in QBR allowed (50.0), third in points (18.9) and seventh in yards per play (5.2).