What You'll Learn
Mechanics that create command
Juan Nieves's delivery system teaches pitchers why mechanics matter beyond velocity — how consistent release points, proper balance, and repeatable arm paths lead to location, longevity, and fewer injuries. These are the same concepts he used in the Boston Red Sox clubhouse.
01
The Foundation: Balance & Posture
Delivery begins before the first movement. Setting up correctly eliminates mechanical flaws that compound through the chain.
02
Wind-Up Mechanics
The wind-up's purpose isn't rhythm — it's loading. How to build momentum into the delivery without sacrificing control.
03
Hip-to-Shoulder Separation
The most misunderstood element in pitching. How hips and shoulders working in sequence generate velocity and protect the arm.
04
Arm Path & Slot
Identifying your natural arm slot and building a repeatable path to it on every pitch. Why forcing an unnatural slot causes injuries.
05
Release Point Consistency
The single biggest differentiator between pitchers with command and pitchers without it. Drills to find and lock your release.
06
Grip & Pitch Types
Proper grips for fastball, changeup, and breaking balls. How grip affects movement and what physical mechanics match each grip.
07
Delivery Drill Progressions
Juan's go-to bullpen session structure and individual drill progressions for fixing the most common mechanical breakdowns.
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