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I'm referring to: you are chasing the ball carrier, then ball carrier's team mate comes and blocks you. The ball carrier's team mate should be in a decent position to receive a pass and create an awesome play that leads to a goal.

But that's offensive screening, which is quite different to defensive screening, and isn't done in most sports, whereas defensive screening is.

In football offensive screening is obstruction, and is a foul, defensive screening is man marking, and is legal. There is nothing wrong with putting yourself between the ball, and an attacker from the opposite team, to block a pass.