A "grand slam home run" is a type of hit in baseball that occurs when a batter hits the ball out of the playing field while there are four players on base. This means that the batter's team scores four runs: one for each player on base and one for the batter. Grand slams are exciting moments in a game, often changing the outcome significantly. To achieve a grand slam, the batter must connect with the ball and hit it over the outfield fence. This feat is celebrated by fans and players alike, as it showcases both power and timing. Grand slams are among the most thrilling plays in baseball history.