| Player: Sebastian Castillo | |||||||||||
| School: Byron Nelson (TX) | Position(s): SS | ||||||||||
| Height: 6′ | Weight: 185 lbs. | Bats: Right | Throws: Right | ||||||||
| Summary: Castillo plays the game with a refined polish that belies his age, combining athleticism, feel, and precision in every phase. A right-handed hitter with a compact, explosive swing, he generates above-average bat speed and consistent hard contact through a strong, flat path. His approach is simple—stay balanced, stay on time—and it allows him to find barrels with regularity while flashing growing pull-side power. There’s real strength behind the bat, producing exit velocities into the mid-90s without selling out for lift. As he continues to mature physically, the hit tool projects to carry with above-average pop following close behind. In the field, Castillo is a steady, instinctive defender with soft hands, clean footwork, and the arm strength to handle either shortstop or third base. The internal clock and body control both stand out, and his throws hold true from all angles. On the mound, he’s been up to 93 mph with a sharp splitter—another reflection of the arm talent that translates across the diamond. With polish well beyond his years and a full set of tools that play on both sides, Castillo projects as one of the more advanced and versatile infielders in the 2027 class. | |||||||||||
Shaun Kernahan is the founder and lead writer of Three Quarter Slot, where he blends scouting precision with a storyteller’s eye for the human side of the game. Based in Parker, Colorado, he has covered baseball prospects at every level since 2013, delivering in-depth evaluations, draft analysis, and developmental insight. Over the years, he has built Three Quarter Slot into a trusted home for thoughtful prospect coverage, detailed scouting reports, and a grounded look at how talent evolves
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