[just another ref]

Originally Posted by bainsey

Then I cannot see a violation in the sitch presented:

A1, in the backcourt, passes the ball ahead, and bounces off the T in the frontcourt, where it is touched by A2 in the backcourt.

While the ball had frontcourt status, the rules (9-9-1&2) say that A1 needs to be in the frontcourt (last to touch) for there to be a violation.

You need to read part of it again. 9-9-2: While in player and team control in its backcourt, a player shall not cause the ball to go from backcourt to frontcourt and return to backcourt, without the ball touching a player in the frontcourt, such that he/she or a teammate is the first to touch in the backcourt.