Batting Average is a Newgrounds term expressing the average score of the top three submissions of an author. As it says in the Newgrounds official Wiki: Like the Alpha section, they were affected by the '07 redesign; they became bugged and have never been fixed. Since BA is determined by your three highest scoring flashes, anyone who had three or more submissions before the redesign is stuck with their pre-redesign BA, and everyone else does not have one until the bug is fixed. According to Auz it was originally an average of all of a user's submissions.