Throw in situation:

[ChuckElias]

Originally posted by Mark Dexter
If you change the arrow when the player has the ball, the refs might get confused and think the other team is entitled to the throw-in.

Or worse, if a foul was committed before the throw-in was completed, the throw-in team would still be entitled to the next AP throw-in. So if you changed the arrow when you handed the ball to the inbounder, you've just screwed them out of a possession.

Chuck