What is the ruling for a runner who missed a base when the ball is still in play?

The ruling that a runner who missed a base is out if appealed is based on the principle that players are required to touch all bases in order during a play. When a runner fails to touch a base, they are subject to an appeal by the defensive team. The appeal must be made before the next pitch or play, and if successfully executed, the runner is declared out for missing that base. This rule is in place to uphold the integrity of the game, ensuring that all players adhere to the established base-running rules.

While a runner could be considered safe under circumstances if the appeal is not made, it does not negate the requirement to touch all bases. Appeals being invalid until the next pitch or the defense's need to request time first do not apply in this situation, as the defense has the right to appeal the missed base immediately following the play. Thus, the correct ruling accurately reflects the rules governing missed bases and the appeal process in baseball.