the restrictions...
i read that the restrictions on players is until the ball hits the ring, backboard or until the FT end is 9-10. so, the ball could hit the backboard first,which would allow players to enter the lane and then hit the ring and still be a legal free throw action.
however 9-3 is the rule reference for the FT "He/she shall throw within 10 seconds to cause the ball to enter the basket or touch the ring before the free throw ends."
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