A player cannot gain an advantage from being behind the last defender before the ball is played to him.MLS rules question. Is there some nuance to the offsides rule that a newby might not be aware of? You cannot be behind the last defender unless the ball is also behind the defender. Anything else?
So, if a player stood by the corner flag the entire time, he's not offsides. If he stands in front of the keeper, he's offsides.