I saw this come across the Twittersphere today:
Said another way “once a pitcher makes a move towards the plate he cannot throw to a base”.
As discussed before balks are very confusing, but balks where a guy starts pitching and just stops are pretty easy to see and call. Cue Mr. Jake Peavy:
This is what we call an elephant balk – so big and obvious it cannot be missed.
I thought the Tweet was cool because it shows how long this rule has been on the books. That is the beauty of baseball – many of the original rules remain in place with limited changes.
Balks are covered on pages 21, 22 and 23 of RuleGraphics.