hey ilya
I think that everywhere it's the same.
FIBA rules:
The shooter can not enter the "Three-second" area before the ball hits the rim.
When I ref, I try to determine why the shooter entered the area. If while shooting he accidentally steps across the line, no problem, I just let them play. But If the shooter figures that his shot might miss, and he tries to get the rebound before the ball hits the ring, then I call the violation. He is clearly trying to get an unfair advantage.
I wish there were more players taking their time to ask questions!! Keep it up, ilya. Some day you will be a fabulous player (who knows, you'll be joining us refs!!
)