Coaches
Sean Duggan
His career from Wikipedia, each job checked against the team-season pages (✓ = a second source agrees, ≠ = they disagree)
Sean Duggan
Played at Boston College 2011-2014
Source: Wikipedia, read 2026-10-26
| Years | Team | Role | Title | Head coach |
|---|---|---|---|---|
| 2015 | Boston College | GA | Graduate assistant | Steve Addazio |
| 2016-2017 | Hawai'i | Position | Linebackers coach | Nick Rolovich |
| 2018 | Massachusetts | Position | Linebackers coach | Mark Whipple |
| 2019 | Ohio State | GA | Graduate assistant | Ryan Day*+ |
| 2020-2022 | Boston College | Position | Linebackers coach | Jeff Hafley |
| 2023 | Boston College | DC | Co-defensive coordinator & linebackers coach✓ | Jeff Hafley |
| 2024 | Green Bay Packers (pro) | Analyst | Defensive assistant | not known |
| 2025 | Green Bay Packers (pro) | Position | Linebackers coach | not known |
| 2026- | Miami Dolphins (pro) | DC | Defensive coordinator | not known |
Record
Confirmed coordinator seasons since 2005. FBS rankings
| Season | Team | Job | EPA/play | Points/poss. | Success | Year before | Teams |
|---|---|---|---|---|---|---|---|
| 2023 | Boston College | Co-defensive coordinator | 108 | 108 | 79 | 77 | 133 |
Worked under
- Steve Addazio · Boston College 2015 (GA)
- Nick Rolovich · Hawai'i 2016-2017 (Position)
- Mark Whipple · Massachusetts 2018 (Position)
- Ryan Day*+ · Ohio State 2019 (GA)
- Jeff Hafley · Boston College 2020-2023 (DC, Position)
His tree
Coaches who were on his staffs
No one on his staffs among the coaches we hold.
Coached together
- Ben Albert · Boston College 2015 · him GA, them Position
- Brian White · Boston College 2015 · him GA, them Position
- Coleman Hutzler · Boston College 2015 · him GA, them Position, ST coord.
- Don Brown · Boston College 2015 · him GA, them DC, Position
- Justin Frye · Boston College 2015 · him GA, them Position
- Steve Addazio · Boston College 2015 · him GA, them Head coach
- Todd Fitch · Boston College 2015 · him GA, them OC, Position
- Vinny Marino · Boston College 2015 · him GA, them Analyst
- Abe Elimimian · Hawai'i 2016-2017 · him Position, them Position
- Brian Smith · Hawai'i 2016-2017 · him Position, them OC, Other, Position
- Chris Naeole · Hawai'i 2016-2017 · him Position, them Position
- Craig Stutzmann · Hawai'i 2016-2017 · him Position, them Other, Position
- Kefense Hynson · Hawai'i 2016-2017 · him Position, them Position
- Kevin Lempa · Hawai'i 2016 · him Position, them DC
- Nick Rolovich · Hawai'i 2016-2017 · him Position, them Head coach
- Jacob Yoro · Hawai'i 2017 · him Position, them Position
- Legi Suiaunoa · Hawai'i 2017 · him Position, them DC
- Ed Pinkham · Massachusetts 2018 · him Position, them DC
- Mark Whipple · Massachusetts 2018 · him Position, them Head coach
- Brian Hartline* · Ohio State 2019 · him GA, them Position
- Chandler Whitmer · Ohio State 2019 · him GA, them GA
- Greg Mattison · Ohio State 2019 · him GA, them DC
- Greg Studrawa · Ohio State 2019 · him GA, them Position
- Jeff Hafley · Ohio State 2019 · him GA, them DC, Position
- Keenan Bailey · Ohio State 2019 · him GA, them Analyst
- Kevin Wilson · Ohio State 2019 · him GA, them OC, Position
- Larry Johnson · Ohio State 2019 · him GA, them Other, Position
- Matt Barnes · Ohio State 2019 · him GA, them Other, ST coord.
- Mike Yurcich · Ohio State 2019 · him GA, them Other, Position
- Ryan Day*+ · Ohio State 2019 · him GA, them Head coach
- Aazaar Abdul-Rahim · Boston College 2020-2023 · him DC, Position, them DC, Other, Position
- Frank Cignetti Jr. · Boston College 2020-2021 · him Position, them OC, Position
- Jeff Hafley · Boston College 2020-2023 · him DC, Position, them Head coach
- Joe Dailey · Boston College 2020-2021 · him Position, them Position
- Rich Gunnell · Boston College 2020-2021 · him Position, them Position
- Steve Shimko · Boston College 2020-2023 · him DC, Position, them OC, Position
- Tem Lukabu · Boston College 2020-2022 · him Position, them DC
- John McNulty · Boston College 2022 · him Position, them OC
- Paul Rhoads · Boston College 2023 · him DC, Position, them Position
- Ryan McCarthy · Boston College 2023 · him DC, Position, them Other