A single in baseball is the most common type of base hit. It occurs when a batter hits the ball and safely reaches first base without the help of an error or an attempt to put out another baserunner. This means the batter reaches first base on their own merit by hitting a fair ball and getting there before the defense can get them out. Singles can happen in many ways: from beating out a bunt or an infield dribbler to hitting a sharply struck ball to the outfield wall and being held at first base. Even if the batter is later thrown out trying to advance to second base, the hit still counts as a single. Singles are important because they help move runners into scoring positions, especially advancing runners from second or third base to home. Players specialized in singles are often called contact hitters or slap hitters due to their focus on hitting the ball and reaching base with speed. In summary, a single is a base hit where the batter reaches first base safely by hitting the ball in fair territory without any fielding errors or fielder's choice scenarios intervening. It is the foundation of offensive play in baseball. This is the main explanation of a single in baseball. Let me know if you want details on any specific types of singles or famous single hitters. Sources used: MLB.com Glossary, Baseball Wikipedia, Baseball Xpert video transcript