Drag Bunt down first runner hit by throw and called out!

[UmpJM]

rrussum,

It sounds like your son was called out for what is commonly termed "runner's lane interference". Without having seen the play, it is impossible to comment meaningfully on the quality of the call. But it certainly sounds like a "proper" call.

Elements such as the quality of the throw, how close the BR actually was to 1B at the time he was hit (in the umpire's sole judgement, of course), and other things may or may not have been judged correctly, but I certainly can't say. The BU is free to seek input from the PU should he so desire, but he is under no obligation whatsoever to do so.

Below is the relevant rule (OBR).

6.05

A batter is out when -

...(k) In running the last half of the distance from home base to first base, while the ball is being fielded to first base, he runs outside (to the right of) the three-foot line, or inside (to the left of) the foul line, and in the umpire’s judgment in so doing interferes with the fielder taking the throw at first base, in which case the ball is dead; except that he may run outside (to the right of) the threefoot line or inside (to the left of) the foul line to avoid a fielder attempting to field a batted ball;
Rule 6.05(k) Comment: The lines marking the three-foot lane are a part of that lane and a batter-runner is required to have both feet within the three-foot lane or on the lines marking the lane.

JM