9/23/18 - Rising Stars Showcase - Five-foot-9, 130-pounds, long, lean frame with long limbs and large feet. Body projects to easily handle the addition of strength and mass. At the plate Seibert shows some feel for the barrel with a middle approach. Gets extended post contact. Maintains barrel on a consistent plane through the hitting zone. At first base he shows soft hands with clean exchanges and an accurate arm. Footwork can get choppy and he tends to stop them at the ball. Backhand is true. On the mound he shows a short, compact arm action through to a high ¾ slot. Uses a short leg kick and stride down the mound. Tends to snap head causing him to lose sight of the plate. Fastball shows slight movement which he keeps down in the zone. Curveball has 1/7 shape with gradual break from the same arm speed as the fastball. Keeps pitch down in the zone and flashes command. Changeup is developing and shows the occasional arm side run. Tends to slow arm on the pitch. Seibert projects very well on the mound with future physical maturation.
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