Under the basket throw in position.....

[Adam]

Originally Posted by Scratch85

And that brings up the question of where they should be. Officials Manual Diagram 3-6 has 4 throw in spots along the baseline between the lane and 3-point arc. 2 throw in spots along the sidelines approximately even with the third block and the top of the key.

IMO these are the throw in spots and an official should choose the one closest to the violation or foul. If it is a division line throw in, you go to the division line. Otherwise you use one of the 24 spots identified (or at least close)

Look in the penalty sections throughout rule 9, for a rule reference. The spot is the "out of bounds spot nearest the violation." The diagram you're referencing is just an illustration showing how to determine it.