I have a question on an overthrow from a game that I coached today...Batter hits a single into the right/center gap, as he tries to stretch it into a double he knows that hewill get thrown out, he retreats back to first and after the second baseman gets the throw from the right fielder he throws to first to get the runner.. The throw is wild and goes out of play..,I say the runner should get third because of the overthrow and he had already obtained first base...the ump awarded him second because once the throw came into the infield the rule reverts to a one base award..who is right?