The Pirates sent their big three prep pitchers from the 2014 draft to Bristol this year, although only 11th round pick Gage Hinsz has seen significant time. Second round picks Mitch Keller and Trey Supak have both been out with arm issues, with Keller having yet to make his season debut. The good news is that both are getting close to a return.
Keller has been out since his final start in extended Spring Training with a forearm strain. He said that he took about ten days off after experiencing tightness, and has since been working on strengthening the muscle.