Page "Bunt (baseball)" Paragraph 8

Often when attempting to bunt for a base hit, the batter will begin running as he is bunting the ball.

This is called a drag bunt.

Left-handed batters perform this more often than right-handed hitters, because their stance in the batter's box is closer to first base, and they do not need to run across home plate, where the ball will be pitched, as they bunt.