| Player: Liam Doyle | |||||||||||
| Org: St. Louis Cardinals | Highest Level: Double A | Position(s): LHP | |||||||||
| Height: 6’2″ | Weight: 220 lbs. | Bats: Right | Throws: Left | ||||||||
| Summary: The fastball is as good an individual offering as any left-handed pitcher in professional baseball right now. A double-plus four-seamer sitting 95-97 and touching 100 with a combination of vertical movement and arm-side run that creates a genuinely rare movement profile — the whiff rates it generates against advanced hitters reflect a pitch that operates at the top of any evaluation regardless of the surrounding arsenal. An intense, high-energy competitor who approaches every outing with a chip on his shoulder, Doyle brings a presence on the mound that amplifies the overall package, and the Cardinals are working with stuff that most pitching development programs never encounter. The splitter is the secondary with the most long-term potential — solid drop that plays particularly well against right-handed hitters after they’ve seen a few fastballs, and the arm action gives the pitch a natural fit that should allow it to develop with consistent reps. A cutter that adds a horizontal element to complement the vertical attack and a curveball with some downward bite round out a deep arsenal, though the lack of a reliable put-away breaking ball against both platoons is the developmental gap that will define the role conversation. Finding a consistent breaking ball shape is the primary focus — the current secondary mix has depth but lacks a true third weapon. The delivery effort, extended arm path and pronounced crossfire finish are worth monitoring — real questions about the long-term durability demands of a starter’s workload, though the collegiate track record makes it premature to close the rotation door entirely. The stuff is too good to commit to relief before the development process has had a chance to address the secondary mix. The high-leverage closer path is the more realistic near-term outcome where the fastball and splitter can operate without the full arsenal demands of a rotation role — the mid-rotation ceiling remains alive if a dependable breaking ball emerges alongside the already elite foundation. | |||||||||||
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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