Six-foot-4 and a bit soft-bodied, Holmberg has room to grow stronger and improve upon his present high-80s velocity. He sits at 86-88 mph and touches 90 from a straight overhand delivery, which aids him in getting good plane to the plate. Quick hand speed enables Holmberg to spin quality 12-to-6 curveballs with above-average break and depth. He mixes in a plus changeup and throws an occasional slider. His secondary stuff and precocious feel for locating his pitches and for changing speeds marks him as a future mid-rotation candidate, particularly if he adds a few ticks to his fastball.
Rodriguez features a plus-plus fastball during most outings, topping out at 97 mph and sitting at 95 with late movement. The pitch features incredible plane by virtue of his 6-foot-5 height, and Appy Leaguers struggled to lift the pitch, going homerless during his 27 innings. He throws a changeup with above-average arm speed that neutralizes righthanders. Despite his arm strength, Rodriguez still walks too many batters to rank as a surefire relief prospect, though his control improved as the season progressed. He also doesn’t have a usable breaking ball at this point, as his slider doesn’t consistently show enough tilt to be graded even as fringe-average.
For the full reports on all 20 prospects go to the link.