Tagging up is a rule first introduced to the game of baseball in 1908. It’s an integral rule to the game, as it helps keep the play fair and organized.
What is the Tagging Up Rule?
The tagging up rule exists to prevent base runners from taking an unfair advantage of their positions during the game. The tagging up rule stops said players from advancing whilst the ball is in the air. Tagging up only usually happens when there are less than two outs in the game and when the batter has hit a flyball into the outfield. If the ball is caught in the outfield, the runner is required to touch the base they were previously at. If the ball is caught in the outfield when the base runner hadn’t touched the previous base, they’re required to go back to that base as the next one wouldn’t have been entitled to them.