Selected with the fifth overall pick in 2015, Zimmer has seen his career sidetracked by a series of injuries. The 24-year-old right-handed pitcher is currently at extended spring training in Arizona where he is dealing with a bout of shoulder fatigue.
Zimmer is likely headed to Triple-A Omaha, and the Royals still view him as a contender for a late-season callup. “If he’s healthy, we all know what he can do,” Royals assistant manager J.J. Picollo told Rustin Dodd of the Kansas City Star.
Zimmer posted a combined 2.39 ERA at Class-A and Double-A in 2015.