[5] At the conclusion of his high school career, Garman committed to play college football at the University of Arizona.
Garman entered the game in Walsh's place, throwing for 244 yards and two touchdowns, leading the Cowboys to a 40–23 victory.
[11][12] In his second start against Texas Tech, Garman recorded a career-high 370 passing yards and four touchdowns, while also rushing for a score, in a 45–35 win.
[13] Against Texas, he was sacked seven times, and he began to experience concussion symptoms, leading Mason Rudolph to start for the Cowboys.
[14][15] He finished the 2014 season throwing for 2,041 yards with 12 touchdowns and 12 interceptions, before announcing his decision to transfer for a second time.