The Arizona Diamondbacks enter 2015 with much uncertainty regarding their starting rotation.

According to the depth chart, Josh Collmenter is listed as the team’s top starting pitcher. He is followed by Rubby De La Rosa, Jeremy Hellickson, Allen Webster and Vidal Nuno.

Out of the five listed, only Collmenter began the season with Arizona last year, first appearing out of the bullpen. 

Patrick Corbin will likely serve as the D-Backs ace but is not projected to return until at least midseason from Tommy John surgery. Daniel Hudson and Bronson Arroyo’s statuses are also unknown coming off injury.

And then there’s Archie Bradley, Arizona’s top prospect who has yet to make an impact at the big league level. Overall, the D-Backs rotation is clearly up in the air.

With that said, here is a projection for the Diamondbacks starting rotation in 2015.

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