Batter Hit By Throw while running out of three foot zone.

[johnnyg08]

Here are some principles...please cite others if you find them:

If the umpire declares the batter, batter-runner or a runner out for interference, all other runners shall return to the last base that was, in the judgment of the umpire legally touched at the time of the interference unless otherwise provided by the rules.

7.08b comment ..."no runner shall advance on an interference play and a runner is considered to occupy a base until he legally has reached the next succeeding base"

J/R page 109: If a batter/runner has not yet touched or passed first base at the time of interference, all runners not out must return to their TOP base.

Exceptions (the one that matters here) is the intervening play.

Also read OBR rule 2.00 "Interference"