What is arm slot? The answer is far more complicated—and far more important—than where a pitcher’s arm is when the ball leaves his hand.

In this special edition of Injury Territory, Edward Egros takes a deep analytical dive into one of the most misunderstood concepts in baseball. Fans, broadcasters, and even teams often talk about “arm slot” as if it’s a single measurement. In reality, it’s the product of an entire kinetic chain that includes body tilt, trunk angle, lower-body drive, release height, extension, shoulder position, and timing. Together, these elements shape pitch movement, deception, velocity, command, and ultimately, injury risk.

Drawing on biomechanics, pitch tracking data, and concepts explored in Will Carroll’s The Science of Baseball, Edward shows why modern pitching analysis has moved beyond simple over-the-top, three-quarter, and sidearm labels. Using four major league pitchers as case studies, he demonstrates how different mechanical patterns can produce similar release points—or dramatically different results.

How does arm slot affect fastball shape? Why do some pitchers generate elite movement without elite velocity? Which mechanical traits help disguise pitches, and which may increase stress on the elbow or shoulder? This episode connects baseball analytics, biomechanics, sports medicine, and player development into one of the most comprehensive explanations of pitching mechanics you’ll find anywhere.

If you’re interested in MLB pitching mechanics, arm slot, baseball biomechanics, pitch design, release point, pitch movement, spin axis, extension, sports medicine, injury prevention, pitching analytics, and the science behind modern baseball, this special episode of Injury Territory is essential viewing.

Get 20% off your first order of $125 or more at MackWeldon.com with promo code FOUL

MLB #Pitching #ArmSlot #BaseballAnalytics #Biomechanics #SportsMedicine #PitchDesign #PitchingMechanics #BaseballScience #InjuryTerritory

 

What is arm slot? The answer is far more complicated&mdash;and far more important&mdash;than where a pitcher&rsquo;s arm is when the ball leaves his hand.
In this special edition of Injury Territory, Edward Egros takes a deep analytical dive into one of the most misunderstood concepts in baseball. Fans, broadcasters, and even teams often talk about &ldquo;arm slot&rdquo; as if it&rsquo;s a single measurement. In reality, it&rsquo;s the product of an entire kinetic chain that includes body tilt, trunk angle, lower-body drive, release height, extension, shoulder position, and timing. Together, these elements shape pitch movement, deception, velocity, command, and ultimately, injury risk.
Drawing on biomechanics, pitch tracking data, and concepts explored in Will Carroll&rsquo;s The Science of Baseball, Edward shows why modern pitching analysis has moved beyond simple over-the-top, three-quarter, and sidearm labels. Using four major league pitchers as case studies, he demonstrates how different mechanical patterns can produce similar release points&mdash;or dramatically different results.
How does arm slot affect fastball shape? Why do some pitchers generate elite movement without elite velocity? Which mechanical traits help disguise pitches, and which may increase stress on the elbow or shoulder? This episode connects baseball analytics, biomechanics, sports medicine, and player development into one of the most comprehensive explanations of pitching mechanics you&rsquo;ll find anywhere.
If you&rsquo;re interested in MLB pitching mechanics, arm slot, baseball biomechanics, pitch design, release point, pitch movement, spin axis, extension, sports medicine, injury prevention, pitching analytics, and the science behind modern baseball, this special episode of Injury Territory is essential viewing.
Get 20% off your first order of $125 or more at <a href="https://mackweldon.com">MackWeldon.com</a> with promo code FOUL
MLB #Pitching #ArmSlot #BaseballAnalytics #Biomechanics #SportsMedicine #PitchDesign #PitchingMechanics #BaseballScience #InjuryTerritory
&nbsp;

Will Carroll is a leading voice at the intersection of sports medicine, analytics, and the business of baseball. His work has been cited across Major League Baseball front offices, broadcast booths, and training rooms, often shaping how injuries are discussed and understood at the highest levels of the sport.

 

Will hosts Injury Territory, a show that explores what actually happened, why it matters, and what comes next. No panic or hot takes - just context about injuries. Part of the Foul Territory Network

Will Carroll is a leading voice at the intersection of sports medicine, analytics, and the business of baseball. His work has been cited across Major League Baseball front offices, broadcast booths, and training rooms, often shaping how injuries are discussed and understood at the highest levels of the sport.
&nbsp;
Will hosts Injury Territory, a show that explores what actually happened, why it matters, and what comes next. No panic or hot takes - just context about injuries. Part of the Foul Territory Network

Injury Territory

What Is Arm Slot?

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/159496e6-5d07-4ebc-b90a-b474013133a6/transcript