Pitcher throwing to unoccupied base

[parrothead]

Starting to see this a lot in the youth stuff, especially with all the travel ball where kids are playing with leads, picks, etc at younger ages. Have seen a lot of guys going "early" stealing from 2B to 3B, maybe on looks, timing, etc and the P just picking directly to 3B, even though its unoccupied, never went to home and the first time I saw it, I was 100% sure it was a balk because of the unoccupied base provision, but then the follow up is making a play on a runner and if that runner is going to 3B, that is what they are doing.

The one I saw last week I think was a balk, but maybe help me out because I think its a balk. Lefty P, Runner breaks 1st move lefty when he lifts his leg to pick, he lands the foot towards first but then doesnt throw, holds it and throws to 2B where he gets the out. Never stepped off and had almost ideal one at 3B with a righty. Where he stepped to pick, runner broke and he didnt throw (didnt disengage the rubber) I thought these were balks, but could be wrong.