balk

[Marty Rogers]

1) Does he disengage the rubber properly
(step off with pivot foot off back of rubber)?
If so, it can't be a balk no matter what he
does after that.

2) If he doesn't disengage, does he step directly
toward 1B with his free foot, gaining direction and
distance, before he throws? If not, it is a
balk. Also, if he does this move to any base,
he is not required to pause in his motion first
(come to a discernable stop).

Whichever thing happens, it does not mean that
the umpire will call it correctly.