If you hit a player in the head with a baseball, you should get thrown out of the game
Kansas City, Missouri, USA; Kansas City Royals left fielder Jonathan India (6) reacts after being hit by a pitch during the ninth inning against the Cleveland Guardians at Kauffman Stadium. | Jay Biggerstaff-Imagn Images
Safety and common sense
The essence of baseball is some guy trying to throw a ball past another guy who is trying to hit said ball with a stick. Sometimes, the guy who is throwing the ball misses their intended location. In some of those situations, the ball could hit the other guy with the stick...