What happens if an unreported eligible substitute steps into the batter’s box?

When an unreported eligible substitute steps into the batter’s box, they assume the count once the ball is live. This means that the game continues as the substitute takes over the at-bat, and the pitch count or ball-strike count remains intact. The rules allow this kind of continuity to ensure that teams are not penalized for unreported substitutions, which can happen during the fast-paced nature of the game.

This answer reflects the principle that as long as the substitute is eligible and steps into the batter’s box without causing a disruption, the game can continue smoothly. The original batter is effectively replaced in the situation, but the game flow is not disrupted unnecessarily by declaring an out or halting play for a ruling. In scenarios where substitutions are handled appropriately, it maintains the pace and integrity of the game while adhering to the rules regarding player participation.