Can A1, who can run the baseline after B has just scored, pass the ball to A2 who is also on the baseline? If so, does A2 have to remain at that spot or can A2 also run the baseline? Also, if you can answer this question, can you sight it in the rule book or case book? Thanks!!

After Team B scores A1 can pass to A2 who can pass to A3 who can pass to A4 who can pass to A5, while all are out of bounds behind the endline. Any of the players from Team A can move along the endline. The only requirement is that Team A shall not consume five seconds from the time the throw-in starts until the ball is released on a pass directly into the counrt.

The appropriate rule section in the 2000-01 rules books are:
NFHS R7-S5-A7 and NCAA R7-S5-A6. There is no current Casebook Plays in either the NFHS and NCAA Rules Books.

And - the passes can be bounce passes.

Defender grabs that pass
 

7-6-1 ...except 7-5-7....The throw-in pass shall not touch a teammate while it is on the out-of-bounds side of the throw-in plane.

7-6-3 The opponent(s) of the thrower shall not have any part of his/her person through the inbounds side of the throw-in boundary plane until the ball has been released on a throw-in pass.

Question:
May a defender intercept this baseline pass between teammates, or... must we judge whether the pass is a throw-in or if it is merely a pass between players.?

If the pass between teammates does not cross the baseline then the defensive player has to violate by rreaching over the baseline: delay of the game warning or T if a warning had previously been issued. If the pass between players out of bounds breaks the baseline, live ball.

paulis,
So, we have to assume the pass is not a throw-in?
I'm not sure. Do you have a rule to cover that?
mick

If B1 breaks the plane and touches the ball prior to it being released for a throw-in, it's a T. No previous warning is required. But if a warning hadn't been previously given, then a warning is also issued with the T.

In order for the pass to be considered as a throw-in pass, it must be thrown directly toward the court. This is a judgment call on your part. However, last year we had an almost endless discussion on whether or not it was a defensive violation if the defender broke the plane as soon as the ball was released by the inbounder toward the court or not. We could revisit this if everyone else would like to get into the endless loop again.

Intense summer league game. Warm day. 10 seconds left. B makes a bucket to cut the lead to 2 points.

Timeout.

A and B come out of the timeout with B in very intense coverage...looking for the steal and not necessarily a foul.
A1 is just outside of the lane line extended. A2 runs from the top of the key to the same spot on the other side of the floor. A1 passes the ball to A2. B2, deflects the pass with a big swat. (ball knock away OOB). Partner blows whistle and pauses for a moment with a look of "Oh ****, I don't want to call that." But he was left with no choice. It had to be a T. With his explanation to the coach, not a word was said in disagreement. A makes both FTs. Game over.

B will remember that and will not make that error in a game that really counts. I asked A's coach later if he called that play hoping for that outcome. He declined and said that he was just trying to get someone open against the tight pressure defense. I bet he will remember that and see if he can draw another opponent into doing it when a game is really on the line.