John Fox

Senior Defensive Assistant


John Fox enters his 31st NFL season, and first in Detroit, as the Lions' senior defensive assistant in 2023.

Fox had a storied 16-year career as an NFL head coach, serving in that capacity for the Chicago Bears (2015-17), Denver Broncos (2011-14) and Carolina Panthers (2002-10). As a head coach, he compiled a 133-123 regular season record, an 8-7 postseason record and earned seven playoff berths, which included capturing the 2013 AFC Championship with the Broncos and the 2003 NFC Championship with the Panthers. He led the Broncos to a division title in each of his four seasons, joining Chuck Knox (Rams; 1973-76) as the only coaches in NFL history to lead their teams to four division championships in each of their first four seasons with a franchise.