If the thrower calls a foul before they are in the act of throwing, play must stop. If the thrower does incorrectly continue play, the disc must come back to the thrower unless 16.3 applies - this applies to both a completed pass, and a turnover. If the thrower is fouled before throw, but the foul continues to occur during throw, then 16.2 applies. If the foul occurs before the throw, but the thrower waits to call the foul during the act of throwing, 15.9 applies.