Luke departed Ole Miss in 2006 to be reunited with Cutcliffe at the University of Tennessee, where Cutcliffe was the assistant head coach and offensive coordinator under head coach Phillip Fulmer.[1] Luke coached the offensive line and tight ends at Tennessee for two seasons (2006–2007).[8]
In early 2008, Duke University hired Cutcliffe as its new head coach, and Cutcliffe brought several Tennessee assistants with him, including Luke.[9] At Duke, Luke was co-offensive coordinator with responsibility for the running game, while also coaching the offensive line.[8] Luke departed Duke at the end of the 2011 season to rejoin the Ole Miss coaching staff under new head coach Hugh Freeze.[8] At Ole Miss, he had a similar role: co-offensive coordinator and offensive line coach.[10]
Head coach
On July 20, 2017, Luke became the interim head coach at Ole Miss after Freeze was forced to resign.[11] After a late season push to finish 6–6, Ole Miss removed the interim tag on November 26, 2017 and named Luke the 37th head football coach in school history.[12][13] Ole Miss did not play in a bowl game; it had withdrawn from bowl consideration in response to NCAA rules violations committed when Freeze was head coach. The school and NCAA also imposed additional penalties, including a second post-season ban for the 2018 season (which also allowed athletes near the end of their eligibility to transfer without penalty); three years of NCAA probation; reductions in scholarships; and recruiting restrictions.[14]
Ole Miss finished with losing records in the next two seasons, resulting in Luke's firing on December 1, 2019.[15]
Georgia
On December 10, 2019, Luke joined the Georgia football staff as an offensive line coach and associate head coach. [16] He helped guide the 2021 Georgia Bulldogs football team to the national championship.[17] On February 21, 2022, he stepped down from his position, citing a need to spend more time with his family.[18]