Small circle within center circle

[BillyMac]

Originally Posted by Nevadaref

The neutral zone marks, commonly called the blocks ...

Still relevant. That separates the first rebounder from where the lead official stands between two free throws in a lot of high school subvarsity games.

I already know, I'm a baaaaad boy! (with apologies to Lou Costello).

http://www.myvirtualofficialsassociation.com/?p=1104

Note: 2018-2019 IAABO Manual Revisions: Free Throw Coverage - Lead Official: Take a position that allows the official to observe the players in the first lane space on the nearer lane line and in the three spaces on the farther lane line.
(Replaces: Free Throw Coverage - Lead Official: Back out of the free throw lane taking a position approximately four feet from nearer free throw lane line and off the court near the end line.)