The Physics of Baseball: Unpacking the Science Behind Kevin Gausman's Signature Pitch

From the initial pitch to the final swing, baseball is a game of physics as much as it is a game of skill and strategy. For Kevin Gausman, a right-handed pitcher for the Toronto Blue Jays, his signature pitch - the splitter - is a testament to the fascinating intersection of physics and baseball. Gausman's splitter, an off-speed pitch that drops sharply before it reaches the plate, is a masterclass in the application of fundamental physical principles. In this article, we delve into the physics behind Gausman's splitter, exploring the role of gravity, drag, and the Magnus force in shaping the trajectory of the ball.

Key Takeaways:

• The splitter is a type of off-speed pitch that travels more slowly and drops more sharply than a conventional fastball, making it harder to hit.
• The difference in speed between the fastball and the splitter is minimal, but significant enough to affect the batter's ability to hit the pitch, taking approximately 60 milliseconds longer to reach the plate.
• The trajectory of the ball depends on the force of gravity, drag, and the Magnus force, which arises from the rotation or spin of the ball as it passes through the air.
• Gausman's fastball typically drops 25 to 30 centimeters on the way to home plate, while his splitter drops 50 to 75 centimeters due to the weakened Magnus force.
• Understanding the science behind the pitch offers a new way to appreciate the game and highlights the importance of spin and speed in baseball.

Statistics:

• The average speed of Gausman's fastball is 95 miles per hour (42.5 meters per second), while his splitter travels at an average speed of 85 mph (38.0 m/s).
• The time it takes for Gausman's fastball to reach the batter is approximately 390 milliseconds, while the splitter takes approximately 490 milliseconds.
• A batter has roughly a quarter of a second to judge the trajectory of a pitch and decide whether to swing.
• The Magnus force can cause the ball to curve if it spins as it travels, with a pressure imbalance generated by the rotation of the ball.

Sources:

• The Conversation -- Canada -- By Patrick Clancy, Assistant Professor, Physics & Astronomy, McMaster University (https://theconversation.com/how-the-physics-of-baseball-explains-blue-jay-kevin-gausmans-signature-pitch-268732)
• Bernoulli's Principle and the Magnus force (https://en.wikipedia.org/wiki/Magnus_effect)
• Physics of baseball and projectile motion (https://en.wikipedia.org/wiki/Projectile_motion)
• Average speed and time to reach the plate (https://www.baseball-almanac.com/pitching/pitching_averages.shtml)