MythBusters · Video summary

Baseball Special! | MythBusters | S4 E15 | Full Episode

MythBusters explores baseball myths, finding corked bats are less effective, humid balls travel shorter distances, sliding is faster than running, and a rising fastball is impossible.

MythBusters · January 25, 2026 · 49-min episode · 5-min read

Baseball Special! | MythBusters | S4 E15 | Full Episode

Key takeaways

🧠The psychological advantage of believing a bat is 'special' (like a corked one) might influence a player's performance more than any physical advantage.08:35
🚀Consider the psychological impact of equipment or perceived advantages, as belief can sometimes outperform reality.08:35
💡Baseball humidity significantly affects performance: dry balls (10% humidity) bounce higher and travel farther than humid balls (90% humidity), with a potential difference of 14% in bounce height and ~60 feet in distance over 425 feet.13:08
🔧When analyzing performance data, account for environmental factors like humidity, as it demonstrably impacts ball behavior and game outcomes.13:08
🎯Corking a baseball bat to add cork inside the barrel does not increase hitting distance; it actually absorbs impact, reducing the ball's exit speed by up to 50% compared to a standard bat.25:59
🚀A rising fastball is a myth; the physics of spin and air pressure generate forces that can lift a baseball, but never enough to overcome gravity and the ball's weight.33:51

Chapters

0:01🎯 Introduction and episode overview
1:06🎯 Meet the MythBusters team and guest star
4:22🎯 Myth discussion: corked bats
10:21🎯 Experiments with humid and dry balls
16:44🎯 Myth about humidified baseballs
21:22🎯 Results: humid balls travel less far
25:44🎯 Testing corked bats with machine and cannon
25:44🎯 Experiment: testing actual arrival and departure speeds
27:48🎯 Results: corked bat myth busted
28:20🎯 High-speed pitching with Roger Clemens
31:10🎯 Physics of baseball pitches
33:20🎯 Myth busting: the rising fastball
35:12🎯 Myth about sliding into bases
38:42🎯 Testing slide speed and technique
42:20🎯 Myth about knocking the hide off a baseball
43:54🎯 High-pressure cannon experiments
44:48🎯 Conclusion: myth about knocking hide off is busted
47:20🎯 Final thoughts and episode wrap-up

The digest

A comprehensive investigation into four popular baseball myths—including corked bats, ball humidity, sliding speed, and hitting the baseball so hard the hide peels off—using scientific experiments, robotics, and insights from legendary pitcher Roger Clemens.

High Level Overview

This MythBusters episode rigorously explores four widely debated baseball myths using controlled experiments, advanced technology, and expert insight from seven-time Cy Young Award winner Roger Clemens. The myths include whether corked bats hit further, if humid baseballs are harder to hit far, whether sliding into a base is faster than running, and if a ball can be hit hard enough to peel the leather hide off. This detailed analysis brings clarity and scientific scrutiny to questions familiar to players, fans, and sports scientists alike, illustrating the physics behind America’s pastime.