A baseball is a small, round ball used in the sport of baseball. It typically has a core made of cork or rubber, wrapped in layers of yarn, and covered with white leather. The standard size of a baseball is about 9 inches in circumference and weighs approximately 5 ounces. Baseballs are designed for durability and performance, allowing players to throw, hit, and catch them effectively. The ball features red stitching, which helps players grip it better. In professional leagues, such as Major League Baseball (MLB), specific regulations govern the construction and quality of baseballs used in games.