One of the few bright spots from the 2016 season was the development of Jake Barrett. While there were flashes of brilliance on the mound, Barrett struggled at times and down the stretch. The Diamondbacks initially drafted him as a high polish, quick to the big leagues reliever but the path slowed down at the upper minors. Barrett finally broke through in Spring Training and earned a spot on the MLB roster and stayed there for the entire year. Barrett's repertoire consists of mostly an upper 90s fastball and a wipeout slider, although he'll mix in an occasional splitter.