Dolphins hired Packers linebackers coach Sean Duggan as their new defensive coordinator.

02 February 2026

The hiring reunites Duggan with former Packers DC and new Dolphins head coach Jeff Hafley. Duggan, 32, entered the NFL’s coaching ranks as a Packers defensive assistant in 2024. He was promoted to linebackers coach in 2025, evidently impressing Hafley along the way. Hafley will likely call plays for the Dolphins defense in 2026.