Thor Griffith

Thor Griffith
Profile
PositionDefensive tackle
Personal information
BornPortsmouth, New Hampshire, U.S.
Listed height6 ft 2 in (1.88 m)
Listed weight305 lb (138 kg)
Career information
High schoolPortsmouth
College
NFL draft2025: undrafted
Career history
* Offseason and/or practice squad member only
Awards and highlights

Thor Griffith is an American professional football defensive tackle. He played college football at Harvard University from 2021 to 2023 and University of Louisville in 2024. He was signed as by the Seattle Seahawks an undrafted free agent in 2025.

Early life

Griffith attended Portsmouth High School in New Hampshire and committed to play college football for the Harvard Crimson.[1] His mother is South Korean.[2]

Griffith wrestled alongside football.[3] He was an All-American and team captain in 2018. That year, he also was named Portsmouth High School’s Most Valuable Player and Seacoast Wrestler of the Year, won the Division II state championship, and placed second at the New Hampshire Meet of Champions, fourth at the New England Wrestling Championship, and seventh at the NHSCA Virginia Beach Nationals.[4]

College career

Harvard

As a freshman in 2021, Griffith notched 31 tackles with 10.5 being for a loss, five sacks, and a forced fumble.[5] In 2022, he made ten starts for Harvard, totaling 46 tackles with 12 being for a loss, and five sacks,[6] earning first-team all-Ivy League honors.[7] In 2023, Griffith tallied 55 tackles with 11 going for a loss along with three and a half sacks and again earned first-team all-Ivy League recognition.[8] After the season, he entered his name into the NCAA transfer portal.[8]

Griffith finished his career at Harvard playing in 30 games where he finished with 132 tackles with 33.5 being for a loss, and 13.5 sacks.[9]

Griffith's personal records include a 40-yard dash time of 4.95 seconds and bench-pressing 225 pounds 45 times.[10]

Louisville

Griffith transferred to play for the Louisville Cardinals.[9]

Griffith was named to Bruce Feldman's of The Athletic top 100 "freaks" list in college football in 2023.[11] He was named to the list for a second straight time in 2024.[12]

Professional career

Pre-draft measurables
Height Weight 20-yard shuttle Bench press
6 ft 1+3⁄4 in
(1.87 m)		 305 lb
(138 kg)		 4.84 s 42 reps
All values from Pro Day[13]

Seattle Seahawks

On July 29, 2025, Griffith signed with the Seattle Seahawks after not being selected in the 2025 NFL draft.[14] On July 31, he was waived by the Seahawks.[15]

Saskatchewan Roughriders

On April 27, 2026, Griffith signed with the Saskatchewan Roughriders of the Canadian Football League (CFL).[16] He was released on May 13.[17]

References

  1. ^ O'Leary, Ryan (July 16, 2020). "Portsmouth's Thor Griffith undeterred by lost season". Seacoast Online. Retrieved May 10, 2024.
  2. ^ Wong, Griffin (December 13, 2023). "Star Defensive Tackle Thor Griffith, On Fast Track to NFL, Set to Join Louisville in 2024". www.thecrimson.com. Retrieved June 4, 2024.
  3. ^ Covey, Terrill (January 29, 2019). "Griffith remains unmatched on the mat". Foster's Daily Democrat. Retrieved May 4, 2026.
  4. ^ "Harvard tackle Thor Griffith is a 305-pound defensive presence for the Crimson". Boston Herald. August 23, 2023. Retrieved May 4, 2026.
  5. ^ "Thor Griffith Stats". Harvard University Athletics. Retrieved May 10, 2024.
  6. ^ Thompson, Rich (August 23, 2023). "Harvard tackle Thor Griffith is a 305-pound defensive presence for the Crimson". Boston Herald. Retrieved May 10, 2024.
  7. ^ Weber, Alex (December 10, 2023). "Louisville lands commitment from coveted Harvard DL Thor Griffith". On3.com. Retrieved May 10, 2024.
  8. ^ a b Connolly, Matt (November 24, 2023). "Harvard defensive lineman Thor Griffith enters NCAA Transfer Portal". On3.com. Retrieved May 10, 2024.
  9. ^ a b Feldman, Bruce. "Harvard All-Ivy League DT Thor Griffith commits to Louisville: Why he chose the Cardinals". The New York Times. Retrieved May 10, 2024.
  10. ^ Feldman, Bruce (December 10, 2023). "Harvard All-Ivy League DT Thor Griffith commits to Louisville". The New York Times. ISSN 0362-4331. Retrieved July 20, 2024.
  11. ^ Feldman, Bruce (August 15, 2023). "College football Freaks List 2023: Bruce Feldman's rankings, with a true freshman at No. 1". The Athletic. Retrieved January 15, 2025.
  12. ^ Feldman, Bruce (August 6, 2024). "College football Freaks List 2024: Why Nyck Harbor takes No. 1 spot (again) in Bruce Feldman's rankings". The Athletic. Retrieved January 15, 2025.
  13. ^ "Thor Griffith College Football Profile". DraftScout.com. Retrieved April 15, 2025.
  14. ^ Boyle, John (July 29, 2025). "Seahawks Sign DT Thor Griffith". Seahawks.com. Retrieved July 30, 2025.
  15. ^ Simmons, Myles. "Seahawks sign CB Keydrain Calligan, waive DT Thor Griffith". NBC Sports. Retrieved August 1, 2025.
  16. ^ "Riders Sign All-american Defensive Tackle Thor Griffith". Riderville.com. Retrieved April 28, 2026.
  17. ^ Heilman, Michael. "Saskatchewan Roughriders sign DB Malcolm Bell, release 11 players". BGMSportsTrax.com. Retrieved May 14, 2026.

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