Webster

Runner on 3rd, no outs. Batter flies out to centerfield. Before the catch is made, runner backs away from his occupied base in order to gain a “running advantage.” Batter touches the base exactly when the ball is caught and continues to home plate before the throw reaches and scores; or does he?

Score tied, bottom of the 9th, runner on third. Batter hits home run; reaches 1st base then stops. Does run score?