Roper joined up again with Cutcliffe in 2006 when Phillip Fulmer named him an assistant coach for running backs. Amongst those coached by Roper was Arian Foster. Roper left in 2008, when David Cutcliffe was named head coach at Duke, he followed as the Blue Devils' offensive coordinator.
At Duke, Roper coached Thad Lewis from 2008 to 2009. Lewis set many records at Duke and finished his career as the school's all-time leader in pass attempts (1,510), pass completions (877), passing yards (10,065) and passing touchdowns (67).[1]
From 2010 to 2012 Roper coached Sean Renfree. Duke averaged 381.3 yards per game in 2010, the most for the Blue Devils since their 1989 ACCchampionship team. In 2013, Roper was a finalist for the Broyles Award, given annually to the nation's top college football assistant coach.
On January 3, 2018, Roper was hired to serve as quarterbacks coach at Colorado.[6] He served as quarterbacks coach for the first eleven games of the 2018 season, until Mike MacIntyre was fired, when he was named interim head coach for the final game of the 2018 season.