Dolphins Appoint Sean Duggan as Defensive Coordinator
The Miami Dolphins have officially appointed Sean Duggan as their new defensive coordinator under head coach Jeff Hafley. This decision comes as the Dolphins look to strengthen their defense for the upcoming season.
Duggan’s Coaching Background
Sean Duggan brings a wealth of experience to Miami’s coaching staff. He has previously served as the linebackers coach for the Green Bay Packers, where he worked closely with Hafley.
- Duggan was appointed linebackers coach at Green Bay in 2025.
- He was a co-defensive coordinator at Boston College in 2023.
- His tenure at Boston College lasted from 2020 to 2022.
- Duggan began his coaching career in 2015 as a graduate assistant at Boston College.
- He also had coaching stints at Hawaii, Massachusetts, and Ohio State.
Connection with Jeff Hafley
The relationship between Duggan and head coach Jeff Hafley spans several years. Duggan has been part of Hafley’s coaching staff during their time at Boston College and followed him to Green Bay. Their established working relationship is expected to benefit the Dolphins as they aim for a competitive edge.
Defensive Strategy for 2026
Looking ahead, Coach Hafley has stated that he will take charge of the Dolphins’ defensive playcalling in 2026. This approach indicates a strategic vision for the team, leveraging the coaching expertise of both Hafley and Duggan.
With Duggan’s promotion, the Dolphins are poised to enhance their defensive performance. His background and knowledge will be crucial as the team prepares for the challenges in the upcoming NFL season.
