| Player: LJ Mercurius | |||||||||||
| School: Oklahoma | Position(s): RHP | ||||||||||
| Height: 6’2″ | Weight: 175 lbs. | Bats: Right | Throws: Right | ||||||||
| Summary: Mercurius works with a lively fastball that has reached 97 mph, though the pitch can lack ideal shape at times. His best offering is a gyro slider in the low 80s that already flashes as a plus weapon, missing bats with late tilt. A developing changeup rounds out the mix, showing occasional tumble and fade when executed. The foundation is built on athleticism and a clean delivery that allows him to maintain velocity deep into outings. Physically, he’s high-waisted and projectable, with room to add strength that could sharpen his arsenal further. While command and pitch consistency remain areas for growth, the ingredients of a starting-caliber arm are present. With refinement, Mercurius projects as a mid-rotation option, though the fastball-slider combination alone gives him a bullpen floor. | |||||||||||
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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