The Diamondbacks selected Carrillo to the 40-man roster Saturday.
Carrillo will claim a spot on the 40-man roster after posting a 19:3 K:BB in 12.1 shutout innings across his last 10 appearances at Triple-A Reno. He'll remain at Reno for the time being, but he could be called up for his MLB debut later this year if he continues to pitch well in the hitter-friendly Pacific Coast League.