Bradley looked like he was poised to break out in 2015 after a very strong showing in spring training. Unfortunately, things just went south from there. After taking a comebacker off Carlos Gonzalez's bat in the face, Bradley was never the same. Even before the injury, Bradley's walk rate raised some red flags. He was often able to escape trouble but giving up a lot of walks WILL come back to bite you at some point. Bradley would also be shut down later in the season due to shoulder inflammation. Needless to say, it was not a good year.
The calendar has turned to 2016 though, and Bradley still has ace potential. Having Zack Greinke to teach him will help a lot, as will being a few more months removed from his frightening injury. He's still 23 and has a lot of time to realize his potential. He's far from a sure thing this season, but there's no reason he can't be fantasy relevant in 2016 if he gets his control issues rectified.