I've got another ref question that I'm not sure is in the rulebook or not...

[DiscoHristo]

Is there any type of rule stating anything about a player yelling when another player is in process of taking a shot? as if saying "heyyyyyyyyyy" when they attempt the shot? maybe it's just bad sportsmanship???

Or is there any rule in the book stating anything about when a player is attempting a shot, and the defender runs at that player's legs, but never touches them? i've seen refs warn players for this, but i'm not sure what the warning is for? the player is not touching them, but may look like he's about to take the shooter's legs out from under him... or is it a sportsmanship call?