Hemo The Magnificent (1957) ...
 

During the twenty seconds that is allowed for a player to address any minor blood on the body or uniform without leaving the game or the coach requesting a timeout, is the coach, or trainer, allowed to enter the court to be near the player, of must the player move to the bench area?

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If the coach is beckoned or comes on the court the player must leave (or the team takes a TO). If the coach wants to use the 20 seconds for blood, a/he has to stay at the bench. That’s where the trainer will resolve the issue anyway.

Always Listen To bob ...
 

Thanks bob jenkins. Just wanted to confirm.