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The son of former 19-year major league lefthander, Al Leiter, Jack is arguably the most polished pitcher in the 2019 prep class. Standing at just 6 feet, 191 pounds, Leiter isn’t the most physically imposing and he doesn’t have the biggest pure stuff, but he has an advanced feel for pitching with confidence in each of his offerings. A first-team Preseason All-American, scouting directors also voted Leiter as having the best command of the 2019 class with an up-tempo delivery and a starter’s arm action. Leiter uses both a four-seam and two-seam fastball, and his heater gets up into the 94-95 mph range early in outings before sitting comfortably in the low 90s. His curveball is his best offering and one of the better breaking balls in the entire high school class, as the mid-70s pitch ranges in shape from a true, 12-to-6 downer to a three-quarter breaking ball. Leiter can land the pitch, which features a spin rate in the 2,600 to 2,700 rpm range, for strikes in the zone or bury it for swings and misses as a chase pitch. He’ll also throw in a slider, which has tighter spin but less depth than his curveball, in the low 80s. The slider is more of an average offering while the curveball looks like a plus pitch. Additionally, Leiter has a low-80s changeup that is among the best in the class. Committed to Vanderbilt, Leiter is expected to be a difficult sign.