Other video games, TV shows, movies, general chit-chat...this is an all-purpose off-topic board where you can talk about anything that doesn't have its own dedicated section.
He's certainly free to post about it here, though I don't think we've got all that many regulars who play MLB 2K so it would be prudent if he looked around a bit elsewhere if no one here can answer his question.
Perhaps, but as I said there doesn't seem to be too many regulars who play the MLB 2K series (or at least post about it much) so don't be too disappointed if advice is scarce. Perhaps there are some FAQ lists and guides available in the 2K Forums?
I've played the game a few times it's actually pretty good considering I'm not a huge baseball fan. But, I don't know what you mean throwing the ball behind the catcher. I've never had that happen to me.
He meant intentionally pitching the ball behind the catcher or throwing a pitch that the catcher won't automatically catch if the batter doesn't hit it.