Mistaken substitution
A6 and A7 report to the scorer that they are entering the game. A6 enters for A1. A7 enters and tells A2 he's entering the game for him. A's head coach then yells to A7 that he made a mistake and he doesn't want him to go in the game after all.
Was A2 officially replaced? Should A2 be directed to go to the bench and have to wait until the clock starts to go back in?
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