Jump Ball play... video
 

YouTube - Three NBA Referees Miss an Obvious Call

Legal in FED or NCAA? Or heck, NBA if anyone knows it. Just curious, that's all.

Not legal in Fed. Neither of the jumpers may catch the ball until it has touched the floor, a non-jumper, an official, the basket, or the backboard. The jumpers can leave the circle once the ball has been touched.

I'm not sure what the NCAA or NBA rules are.

The announcers were half right. He can leave the circle as soon as it's touched, but he can't catch the ball until it touches a non-jumper, the official, the basket or backboard, or the floor.

Just to clarify, are we talking about the small jumping circle or the circle that all players must stand around?

(in hibernation until baseball season starts...)

There is only one circle defined in the rules, and that is the larger circle which is 12 feet in diameter.

Not sure if it's an NBA rule or not, but the ball was touched before it reached it's peak.

Fed
 

So in this case, you give it to team B and reset the arrow for A at the Division Line. And B1 leaving the circle and or catching the ball would be inconsequential because hopefully U1 noticed the stolen tap and had it first, right?

Illegal under NBA rules. Pertinent rules regarding the jump ball

Rule 6
Section VII—Restrictions Governing Jump Balls

a. Each jumper must have at least one foot on or inside that half of the jumping circle which is farthest from his own basket. Each jumper must have both feet within the restraining circle.

b. The ball must be tapped by one or both of the players participating in the jump ball after it reaches its highest point. If the ball falls to the floor without being tapped by at least one of the jumpers, one of the officials off the ball shall whistle the ball dead and signal another toss.

c. Neither jumper may tap the tossed ball before it reaches its highest point.

d. Neither jumper may leave his half of the jumping circle until the ball has been tapped.

e. Neither jumper may catch the tossed or tapped ball until it touches one of the eight non-jumpers, the floor, the basket or the backboard.

f. Neither jumper is permitted to tap the ball more than twice on any jump ball.

g. The eight non-jumpers will remain outside the restraining circle until the ball has been tapped. Teammates may not occupy adjacent positions around the restraining circle if an opponent desires one of the positions. No player may position himself immediately behind an opponent on the restraining circle.

Penalty for c., d., e., f., g.: Ball awarded out-of-bounds to the opponent.

h. Player position on the restraining circle is determined by the direction of a player’s basket. The player whose basket is nearest shall have first choice of position, with positions being alternated thereafter.

In the officials defense WTF -- we are paid to know the rules but these once in a century things catch us so off guard sometimes that by the time you have digested what just happened its been 2quarters.