[Greyhound]

On the drop ball thing...Looks like everybody has a view here..

On challenging the keeper. It is unfair for a player to play the body of any player when not within playing distance of the ball. This is usually defined as 2-3 steps at the current speed of play. But it can also be defined unplayable if the ball is way over the players head.
What Im getting at here is that if the keeper wont be able to get to a ball without a big high jump...A field player cant reasonably expect to head the ball and the ball is not within playing distance. If the ball is not within playing distance, there is no reason to "tackle"the keeper.
Watching games in every signifigant pro league and the MLS this is how it is called.