When is a sub the pitcher?

[ilyazhito]

Originally Posted by ilyazhito

If he is on the rubber when "Play" is called, he is a pitcher.

If he throws more than 8 warmup pitches (he entered because F1 was injured/ejected, or the plate umpire decided to allow extra warmup pitches), the substitute is now the pitcher, and the original pitcher must re-enter later.

All of this applies if he was not reported. If he is reported, he becomes a player when he is reported to the umpire, and his name is entered into the batting order (whether into a spot that hits, or into the 10th spot, if the DH bats for him).