When F1 signals a dead ball during his pitching motion with R2 and R1 advancing, what occurs?

In the scenario where F1 signals a dead ball during his pitching motion while R2 and R1 are advancing, the correct outcome is to award each runner one base from their position at the time of the pitch. This rule applies primarily to the circumstances surrounding a dead ball, where the action is deemed to have been interrupted or illegal, leading to a reset of the play.

When a dead ball is called, it signifies that the game situation has changed significantly, impacting how runners are treated. Since runners are given one base from their position at the time of the pitch, this reflects the rule that is applied in such situations. This awarding of bases is intended to compensate the runners for their efforts in advancing, as their progress is interrupted by the dead ball signal.

The other outcomes do not apply in this situation. Runners would not simply be returned to their original bases, as that would negate their advancement effort. Additionally, awarding only R2 a base does not accurately recognize the presence of R1 and creates an inconsistency in how both runners’ status is treated. Lastly, a dead ball does not automatically result in the batter being out unless specific circumstances dictate such a decision, which is not indicated in the scenario given.