Coker was redshirted as a freshman in 2011. As a backup to EJ Manuel in 2012, he appeared in three games, completing three-of-five passes for 45 yards and one touchdown. As a redshirt sophomore, Coker competed with Jameis Winston for the starting quarterback job in 2013.[3][4] Winston won the job and Coker was his backup until a knee injury in November caused him to miss the rest of the season.[5] He had appeared in six games, going 18 of 36 for 250 yards and one interception.
In January 2014, Coker transferred to the University of Alabama.[6] He had suffered some injuries and, as he later said, "things didn't work out at Florida State". Alabama had shown interest but he had already committed and stuck to his commitment, but his dream had always been to play for Alabama under coach Nick Saban.[7]
He was eligible to play immediately and did not have to sit out a year after graduating from Florida State in April.[8] In his first year at Alabama he competed for the Crimson Tide's starting job.[9][10][11]Blake Sims won the competition with Coker as the backup. Coker again competed for the starting job in 2015, and this time won the competition.
On January 30, 2016, Coker was the starting quarterback for the South in the Senior Bowl in Mobile, Alabama. In one quarter, he was 3-of-8 passing for 23 yards and led his team to the first touchdown of the game.
On April 30, 2016, Coker signed a free agent deal with the Arizona Cardinals after going undrafted in the 2016 NFL draft. He was released by the team on August 29, 2016, as part of a roster cut to 75 players.[13]
On April 21, 2017, after being unable to fully recover from knee surgery, Coker announced his retirement from football. “I’m just going to move on,” Coker said. “I had another surgery when I was with the (Arizona) Cardinals, and that was kind of the last thing. I didn’t want another surgery. I’m just kind of ready to move on. I’m excited about what’s ahead.”[14]
After football
Coker and his wife moved back to Mobile and he got a job in commercial insurance; they had a baby in early 2020.[7]