some defenders formed a 'wall' next to Cech (sort of at 90 degrees to the post).
Law states "at least 9.15 m (10 yds) from the ball, unless they are on their own goal line between the goalposts"
So, ref got it wrong by letting the Arsenal defenders not be on the line imo
http://www.benchwarmers.ie/bench/wat...k-pass/118309/