Originally Posted by Black Magic
so there is no rule on how close you are in front of someone? Like you could literally be right on th guy your defending's face?
In Europe, there's a rule where the offensive player is allowed some space... imagine an invisible cylinder that you're in... the defender can't invade that space...
In America, the defender can body you up. If you're posting up and backing him down, he's allowed to place a forearm on your back. If you're out on the perimeter and facing the guy, he can't touch you with anything other than his chest... so it would be pretty dumb for him to get that close to a player, because he's begging to get crossed over. Since he's not allowing any space between you and him, he has zero time to react to your offense.
If he's using his hand to stop you from penetrating, or you're running into him and as a result, stumbling or getting knocked off balance, most likely it's a blocking foul.
Traditional basketball rules favor the offensive player. 90% of the times when there's contact, it's a foul on the defender. The only times the defender can call an offensive foul, is when his feet are planted and you mow him down Lebron-style, or you do something crazy like swing an elbow at him, etc.