The primary role of a pitcher in baseball is to throw the baseball to the opposing team’s hitters with the aim of getting them out. The pitcher uses various pitches, including fastballs, curveballs, and sliders, to deceive the batters and induce weak contact or strikeouts. Successful pitching requires skill, strategy, and an understanding of the opposing lineup. The pitcher's performance can significantly influence the outcome of the game, making them a crucial player in baseball.