Okay, I should expand...

Throwing the ball off your own backboard and having a violation. Like if a player lobs the ball off their backboard, gets the rebound in the air and slams it (like we've seen in NBA slam dunk contests). Would you call that a violation?

Could be basket interference if the ball was in the cylinder.

but otherwise you're calling the lob off the backboard a try for goal, and allowing the dunk that follows?

We don't have to call it a try for goal. It's legal to throw the ball off one's own backboard.

It may or may not be a try in the judgment of the official, but it's legal. So, unless the lob off the backboard was a free throw :eek:, then I guess the dunk is allowed.

It is NOT a try unless you think they're trying to shoot it. It is just a throw off their own backboard. And such action is entirely legal. It isn't a pass. It isn't a dribble. It isn't a try. It does not, however, allow a new dribble if the player has ended the first dribble unless you rule it to be a try. The case mentioned above that rules that the subsequent dribble is legal is because the play setup declared the throw to have been a try.

*facepalm*

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Break-away situation. Player alone decides to show off. He tosses the ball off the backboard, then runs and jumps to grab the ball and dunk it.

The throwing of the ball off the backboard is clearly not an attempt to score, but it is legal because of Case play 9.5

I'm going to disagree with that part because of 9.5 Situation.

Let's Go To The Videotape ...
 

9.5 SITUATION: A1 dribbles and comes to a stop after which he/she throws the ball against: (a) his/her own backboard; and catches the ball. RULING: Legal in (a); a team’s own backboard is considered part of that team’s “equipment” and may be used.

The caseplay states that, after ending a dribble, it's legal to throw the ball against one's own backboard, and it's also legal to catch it.

It doesn't say that it's legal to start a new dribble (unless the official deems the throw to be a try).

Why is equipment in quotes? Could the player use his leg sleeve to do the same thing? Leg sleeves are equipment.

Nothing in 9.5 indicates or implies that the player is granted a new dribble, just that trowing it off the board and catching (which is not a dribble) it is legal.

I don't see any thing that suggests the dribble rules are suspended.

We've had this discussion multiple times in the past -- with the same (non-) results.

I think NFHS changed that case play a number of years ago -- but it didn't help.

SSDD.

If 9.5 doesn't mean the slate is clear and he's free to do anything, then wouldn't the dunk play be traveling?

No.

Why not? He threw the ball, ran and caught it again.