Resumption of Play Procedure

[missinglink]

Ok, the RPP was developed to prevent delays in getting the game going again. However, when a time-out is follwed by a throw-in, in practice we use the same procedure when both teams are on the floor ready to go: Timer's warning horn, 2nd horn, offiicial's whistle then ball placed at the disposal of the thrower. 8-2 details that RPP is to be used to prevent delay when time-outs are followed by free throw(s). In the case when all players have complied with the 1st and 2nd horns and are in position for the free throw, I do not use the official's whistle to indicate play is about to resume. I simply inform the thrower of number of free throws and place the ball at thrower's disposal. This is a minor thing but the inconsistency kind of sticks out. Is the omission of the whistle in the routine free throw case incorrect?