1. Brad Kaaya -- After a very impressive freshman season in 2014, Kaayta slightly improved in many areas in 2015. While throwing just 20 fewer passes this season (and missing the Duke game), Kaaya's completion percentage went up. He's thrown 11 fewer touchdowns than he did last season but he only threw a third of the number of interceptions and he took nearly half the amount of sacks. The yardage staying the same and the lower touchdown number had a lot to do with losing Phillip Dorsett and Clive Walford to the NFL after last season. His 2015 was slightly better as a whole and he'll be a strong candidate to become a top 10 quarterback nationally in 2016.
2. Malik Rosier -- After looking terrible in the Clemson game off the bench, Rosier prepared as the starter all week before the Duke game and turned in a solid performance on the road in that game. It was his only start of the season. He finished the season with 338 yards, two touchdowns, and three interceptions while connecting on 51-percent of his passes. Surprisingly, he was never used in running situations and the Duke and Clemson games were his only extended action of the season.
3. Evan Shirreffs -- A 6-foot-6 freshman, this kid led the scout team offense all season and drew regular praise from offensive coordinator James Coley. While it's obviously tough to evaluate guys on the scout team, all indications are that Shirreffs is unsurprisingly better than how he was recruited (no other FBS offers). Coley describes him as a tall kid with a good understanding of the offense and position along with good leadership qualities. He'll have a chance to compete with the other three to be Kaaya's primary backup next season.
4. Vinny Testaverde -- The son of the former UM great did not see the field this season. He did travel to some games, however, but the closest he came to entering a game is when Rosier was hurt for a play against Duke. Instead of inserting Testaverde into the game the coaches decided to run a play from the wildcat instead. He was able to redshirt this season and will return in 2016 as a third year sophomore.