What is rosin in baseball?

Rosin is a sticky substance that is commonly used by baseball pitchers to improve their grip on the ball. It is made from the sap of pine trees and is commonly found on the pitcher's mound in a small bag or container. Rosin helps pitchers enhance their grip on the ball, which can lead to better control and accuracy when throwing pitches.

In addition to helping with grip, rosin can also be used to dry sweat and moisture on the pitcher's hands, preventing the ball from slipping out of their grasp. Major League Baseball rules permit pitchers to use rosin during games, as long as it is not used in combination with any other foreign substances that could alter the flight or grip of the ball.

Rosin is considered an essential tool for pitchers, especially in hot and humid conditions where sweat can make it difficult to maintain a tight grip on the ball. It is a legal and widely accepted part of the game of baseball, and its use is generally seen as a necessary and practical measure to help pitchers perform at their best.