Bills Appoint Former Player Leonhard as Defensive Coordinator

Jim Leonhard has been appointed as the new defensive coordinator for the Buffalo Bills, as announced on Saturday. This decision follows the dismissal of Sean McDermott, who led the team for nine seasons.
Background on Jim Leonhard
Leonhard, 43, previously served as the defensive pass game coordinator and assistant head coach with the Denver Broncos. Under his guidance, the Broncos’ defense achieved impressive statistics, including 68 sacks this season, just four shy of the single-season record. They also ranked second in the league for fewest yards allowed per game, conceding an average of 278.2 yards.
Coaching Career Highlights
- Joined the Broncos in 2024.
- Prior roles included senior football analyst at the University of Illinois.
- Coached at the University of Wisconsin from 2016 to 2022, mainly as defensive coordinator.
- Served as interim head coach during part of the 2022 season.
Leonhard’s NFL Playing Career
Before transitioning into coaching, Leonhard had a notable career as an NFL safety and special teams player. He played for the Buffalo Bills from 2005 to 2007 and returned in 2013. His career also included stints with the Baltimore Ravens, New York Jets, and Cleveland Browns.
Team Changes and Vision
This hiring marks a significant shift in the Bills’ coaching strategy under new head coach Joe Brady. Brady aims to build a strong coaching staff focused on player development. Leonhard is the second former Broncos coach to join Brady’s staff, following the appointment of Pete Carmichael as the offensive coordinator.
Coaching Philosophy
During his introductory press conference, Brady emphasized his commitment to hiring top-quality coaches. He stated, “I’m not in the business of hiring my friends; I want the best coaches for these players.”
Future Prospects
Leonhard had discussions with both the Los Angeles Chargers and the Baltimore Ravens regarding potential defensive positions before accepting the Bills’ offer. With his extensive experience and proven track record, he is expected to bring a fresh approach to the Bills’ defense.




