I’m the one that commissioned @Velho to post this play. When I saw it during the Condensed Game replay, I’ll admit, I was befuddled.
F1 is clearly in the windup, and actually turns and takes that drop-step towards 1B, then delivers the pitch. In all my travels, I have encountered colleagues who have called it a Balk (immediately, mind you), citing that “step (move) towards 1B”. Then, in post-games, or in class/clinics, they defend it, typically centering on what F1 can/cannot do with a R1.
Obviously, 4 Professional Umpires didn’t call it; if they had, it would have been delayed (understandably), but… McNeil took that as Strike 3, and struck out (and the strikeout stood).
So, was this a (missed) Balk? Anyone going to defend it as a Balk?
If this goes unjustified, then at the very least, I requested Velho to post it for posterity… we can refer back to it here if we have someone down the road claim “it’s a Balk” when F1 pitches from the windup, and we can actually show it with video.