Abstract: A swing alert system disposed about a baseball setup that includes a pitcher and a batter, with one or more swing alert device that determine a speed and position of a ball along a flightpath of the ball pitched by the pitcher, the flightpath extending from the pitcher to a hitting location target proximate to the batter; determine a time when the ball will reach the hitting location target based at least in part on the determined speed and position of the ball along the flightpath; and generate a swing alert while the ball is traveling along the flightpath and before the ball reaches the hitting location target. The swing alert is generated at a time determined based at least in part on the determined time when the ball will reach the hitting location target and a defined swing time associated with the batter.