[2] Stubblefield starred at Broomfield (Colorado) High School and played two seasons at Laramie County Community College in Cheyenne, Wyoming before transferring to Nebraska–Omaha for his final two years of eligibility.
[2] Stubblefield has served as an assistant coach at Omaha, Texas–San Antonio, Texas–Arlington, and New Mexico State after graduation.
He was an interim head coach during the 2004-2005 season for NMSU as Lou Henson battled non-Hodgkin lymphoma and compiled a 2–12 record.
[5][6] He was then hired at Cincinnati under Mick Cronin where he spent four seasons before serving as an assistant coach for Oregon until 2021.
[7] Stubblefield was hired on April 1, 2021 as the new head coach of the Blue Demons, replacing Dave Leitao.