What is the most common type of pitch thrown by pitchers in baseball?

The fastball is the most common type of pitch thrown by pitchers in baseball due to its effectiveness and versatility. This pitch is typically delivered with maximum velocity, making it harder for batters to react and make solid contact. It is a staple in a pitcher's repertoire because it allows them to establish command and control of the game. Additionally, the fastball can be thrown with different grips and movements, such as the four-seam, two-seam, and cut fastball, providing pitchers with variations and options to deceive hitters. Its simplicity and efficiency make the fastball the go-to choice for many pitchers.