[Mark T. DeNucci, Sr.]

Originally posted by FishinRef
Held ball.
Possession arrow is pointing toward Team A's basket.
Official hands the ball to A1 for the throw-in.
B1 reaches across the end-line as he is trying to defend the throw-in.
Official blows whistle and warns Team B for crossing the vertical plane on the throw-in. The warning is recorded in the score book.
Official starts the throw-in again.
Throw-in is completed.

Official does NOT change the Possession arrow.
Is the official correct

The throw-in Violation by B has NO affect on the AP arrow. After the violation is recorded in the book, the A team’s AP throw-in is COMPLETED. As soon as the the throw in is COMPLETED the AP arrow goes to Team B.

FishinRef:

The official was correct in not reversing the AP Arrow. When B1 reached through the plane he committed a throw-in violation; See NFHS R9-S2-A11. Since in this play Team B had not previously received an official team warning, the penalty for B1's violation is that a team warning is issued to Team B and Team A receives a throw-in. This new throw-in is not an AP Throw-in but is part of the penalty for B1's violation. The AP Arrow is not reversed because Team A's AP Throw-in never ended because of B1's violation; see NFHS R4-S42-A5 for the definition of when a throw-in ends.

The next time a jump ball situation occurs, Team A will receive the ball for a AP Throw-in.

MTD, Sr.