Running lane

[Dakota]

I googled USGF and found an organization called United Southern Girls Fastpitch, which seems to be Tennesee group. Their rule book is online and rule 9-17-F says the batter-runner is out

When he runs outside the three-foot running lane (last half of the distance from home plate to first base) while the ball is being fielded or thrown to first base.
EXCEPTION: This infraction is ignored if it is to avoid a fielder who is attempting to field the batted ball or if the act does not interfere with a fielder or a throw.

Apparently, this rule is copied from somewhere (OBR? - I don't have a copy of OBR, so just guessing here), since a girls fastpitch group's rule book is written generally using male pronouns.

Notice that running outside the running lane is an infraction in any case, but the infraction is ignored in specified circumstances. Doesn't say "taking the throw at first base" as ASA does, just interfering with the throw.

Based on that, perhaps the call was correct.