# Sean Duggan

## Quick Facts

- **Role:** Defensive Coordinator
- **Team:** Miami Dolphins (MIA)
- **Current holder:** Sean Duggan
- **Coaching tree:** Packers/Hafley branch; see Coaching Trees

## Background

Duggan spent one season as a co-DC in college (Boston College, 2023) and just two years in the NFL — a Packers defensive assistant in 2024, then promoted to linebackers coach in 2025. Last season he helped Quay Walker, Edgerrin Cooper, and Isaiah McDuffie combine for 338 tackles. Familiar with new HC Hafley from their Packers time. Play-calling stays with Hafley, so Duggan manages the rest.

## Scheme and Tendencies

Zone-heavy 4-3 base in concert with Hafley. Low blitz rate, low man-coverage rate, more cloud coverage.

## Recent News

- 2026-07-14 — 4 Areas to Watch When Dolphins Training Camp Opens (4 Areas to Watch When Dolphins Training Camp Opens)
- 2026-04-20 — 2026 NFL Head Coach Tracker: Latest Hirings, Firings, and Interviews (2026 NFL Head Coach Tracker: Latest Hirings, Firings, and Interviews)
- 2026-03-19 — New Packers Coaching Staff Reveals Defensive Scheme (New Packers Coaching Staff Reveals Defensive Scheme)
- 2026-02-15 — 2026 NFL Offensive/Defensive Coordinator Search Tracker - NFL Rumors (2026 NFL Offensive/Defensive Coordinator Search Tracker - NFL Rumors)
- 2026-02-15 — 2026 NFL Offensive/Defensive Coordinator Search Tracker (2026 NFL Offensive/Defensive Coordinator Search Tracker)
- 2026-05-21 — 2026 Projected IDP Depth Charts (2026 Projected IDP Depth Charts)
- 2026-02-20 — 2026 NFL Coaching/GM Tracker: Rams Find Their Offensive Coordinator In-House (2026 NFL Coaching/GM Tracker: Rams Find Their Offensive Coordinator In-House)
- 2026-02-23 — Full list of 2026 NFL coordinator grades: Evaluating every OC and DC hire this offseason (Full list of 2026 NFL coordinator grades: Evaluating every OC and DC hire this offseason)
- 2026-03-27 — AFC Coaching Changes: How the 9 New Defensive Coordinators Will Impact IDP Leagues for... (AFC Coaching Changes: How the 9 New Defensive Coordinators Will Impact IDP Leagues for...)
- 2026-03-24 — 2026 NFL Draft: Expectations for seven teams with completely new coaching staffs (2026 NFL Draft: Expectations for seven teams with completely new coaching staffs)


## Sources

- Dolphins reboot with Hafley HC, Slowik OC, Duggan DC for 2026 draft
- Full list of 2026 NFL coordinator grades from CBS Sports

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Source: https://chatffb.com/coaches/defensive-coordinators/miami-dolphins-defensive-coordinator · ChatFFB — fantasy football answers updated from a live news wiki.