Zimmermann was a money-saving fifth-rounder by Atlanta in 2017, traded to Baltimore in the deal that sent Kevin Gausman to the Braves. Zimmermann’s polish and control allowed him to zip through the low-minors, but he’s the type of pitching prospect who generally hits a ceiling against more advanced competition. The lefty pounds the zone with a four-pitch mix, sitting in the high-80s with his fastball and topping out at 91 mph. His slider and changeup are fringy (but usable) offerings, and he’ll mix a lollipop curve at times for another look. Zimmermann could wind up a high-minors depth starter, but the pitchability and guile give him a chance at a long relief role in the big leagues.