The Illinois Scout Blog provides insider information and scouting notes from the Prep Baseball Scouting Staff during the season. This running blog will feature information on underclass prospects, unsigned seniors, draft prospects, and anything else that is notable. We will provide a wide range of information, including player evaluations, velocities, pop times, home to first times, and more. Simply put, the Illinois Scout Blog is loaded with information …

Wednesday, April 16

Barrington vs. Schaumburg

By: Peter Hamot
Assistant Scouting Director, Illinois/Wisconsin 

Jack Postma, RHP, Barrington, 2028
Uncommitted. Long-levered and high-waisted 6-foot-5, 186-pound frame, all sorts of room to fill out and add strength, still growing. Got the start on the mound as only a freshman in a conference matchup and threw the ball well over his five innings of work, earning the win while allowing just one hit with no runs, four walks and struck out five. The right-hander controls his levers well for his size, and he’s extremely flexible and elastic with a long stride and layback in his shoulder/arm at footstrike, much more velocity to still come. He has a controlled tempo with a drop/drive operation, working with some downward angle down the mound, clean and whippy arm, ¾ slot. His fastball played around 84-86 mph early, topping out at 87 mph with run to his arm-side, competed in the zone and attacked, miss was up and in when he got under the FB. Curveball has quality shape with 11/5 bite, developing spin and feel but should continue to get better, played in the upper-60s. Was able to throw his changeup for strikes while playing in the low-80s, similar profile to the fastball. High-ceiling arm to follow closely throughout the years.