I do U18 and below and have never called this nor killed it.
I announce the count or call the batter out(KS w/1B occupied), but feel that's as much as I can do as an umpire.
But, you know, I've never even considered a batter really trying to do it..
As soon as I read the desciption of "a batter swinging at the first pitch and taking off",
Made me almost ring him up,,but I still don't think I could..how's that for not having an exact rule I could quote, still boils down to judgement.
My answer to: "but if you were the catcher and the batter took off, wouldn't you have thrown to first?"
NO! And there are at least 8 good reasons why not. At least 5 infielders should have known, an umpire or two, and a coach or two. Why not the catcher too?
This is a reminder I gave my catchers a lot, "dropped 3rd strike,ya don't have to throw",or "two outs dropped 3rd strike ya gotta throw", so if one of my teams did this, I wouldn't attempt to get the interference call, we knew better. And we did it, and I didn't ever get it, nor ask for it...
So, this is one of those IMO that just doesn't fit the rule as described (NFHS 3-2-3)nor
OBR 7.09
(e) Any batter or runner who has just been put out hinders or impedes any following play being made on a runner. Such runner shall be declared out for the interference of his teammate;
Rule 7.09(e) Comment: If the batter or a runner continues to advance after he has been put out, he shall not by that act alone be considered as confusing, hindering or impeding the fielders.
BR that's out on an INF, if it's dropped say, by F4. F4 panics and try's to throw the still running BR out at 1B, not interference.
R2 bases loaded 0 outs, GB to F5, he steps on 3rd. Forcing R2, then throws past F3. As F9 picks up the ball and throws a strike to F2 to retire the sliding R2, at home, interfernce on R2. That guy (R2) clearly shouldn't have been there. I could easily tell he was drawing a throw to advance the runners..
Seems verbatim the "retired runner" has some definite liberty's not offered the "NOT YET OUT" batter, so I would say, yes interference could be called by the book. But boy not so sure it could be done obviously enough for me to call it. IMO, you got hosed.
You sure he wasn't just laying his bat down and running up to check with 1B coach on the signs?