Violation: yes or no?

[Nevadaref]

Originally Posted by BadNewsRef

It is a good question. I asked the same question here about 5-6 years ago.

You could refer to these:
2011-12 NFHS Basketball Rules Interpretations

SITUATION 3: A1 has the ball for an end-line throw-in in his/her backcourt. The administering official reaches a four-second count when A1 passes the ball onto the court. A1’s pass to A2, who is also in Team A’s backcourt, takes several bounces and six seconds before A2 picks up and controls the ball. RULING: Legal. Even though a team is now in control during a throw-in, the 10-second rule specifically requires that a player/team be in continuous control in its backcourt for 10 seconds for a violation to occur. Technically speaking, the thrower-in is out of bounds and not located in the backcourt. (4-35-2; 9-8)

SITUATION 5: A1 has the ball for an end-line throw-in in his/her frontcourt. A1’s pass to A2, who is in the frontcourt standing near the division line, is high and deflects off A2’s hand and goes into Team A’s backcourt. A2 is then the first to control the ball in Team A’s backcourt. RULING: Legal. There is no backcourt violation since player and team control had not yet been established in Team A’s frontcourt before the ball went into Team A’s backcourt. The throw-in ends when A2 legally touches the ball, but the backcourt count does not start until A2 gains control in his/her backcourt. (4-12-2d; 9-9)