What happens if a runner attempts to return to touch a missed base after the ball is dead?

A runner attempting to return to touch a missed base after the ball is dead is subject to an appeal by the defense. In this situation, the defense has the right to make a valid appeal for the runner's failure to touch a base. Since the ball is dead, the runner can no longer place themselves safely on the base; however, if the defense successfully notifies the official of the missed base when the play is dead, the appeal stands as valid. This means the runner can still be deemed out for missing the base, making the appeal successful.

The context here is essential; a "missed base" is a situation where the runner, while running the bases, failed to touch a base legally during the course of play. Typically, when the ball is live, runners are expected to make all required touches as they navigate the bases. Once the ball is dead, the rules dictate that the defense can appeal for missed bases, and if the appeal is upheld, the outcome is that the runner is out.