Another example of my pet hate in terms of the offside rule in the Man Utd Arsenal game. United's third goal, the ball is played to Erickson who is onside, but he's behind Rashford, who would have been offside has he come into play at that point. They both run on and Erickson passes to a now onside Rashford, who scores. The rules somehow say that Rashford isn't interfering with play despite him obviously gaining an advantage by giving the defenders two attackers to cover. The bloke who ends up scoring isn't interfering with play, not like a bloke swiping at and missing the ball before a defender makes a clearing header and someone hits a wonder strike from the resulting clearance. The rules need changing.
Excellent explanation of the facts .