Liverpool captain Steven Gerrard believes if the reasoning behind the decision to deny Luis Suarez an added-time winner in Sunday's 219th Merseyside derby draw was replicated throughout the season the Premier League would be "in trouble".
The Reds striker's late goal was incorrectly ruled out by a linesman's flag at Goodison Park, having earlier seen Everton make it 2-2 from a throw-in which should have gone to the visitors.
"I've seen it (Suarez's disallowed goal) again and we can feel sorry for ourselves because it was a clear goal," said the England captain.
"We should have taken away the three points rather than just one.
"There is no offside and it's difficult for me to explain it. The only person who can explain it is the linesman.
"I asked him after the game if it was offside and he said 'I think so'. That's not good enough.
"If every decision in this league is based on 'we think so' then we're in trouble.
"The linesman got it badly wrong. The benefit of the doubt is supposed to go to the attacking player anyway.
"And for their second goal, it's a clear throw-in to us. The linesman (not the one who flagged Suarez offside) gives us the throw but the referee (Andre Marriner) saw something different.
"He gave Everton the throw and their second goal came from that."