Chelsea were left seething at the offside rule on Saturday night as Thibaut Courtois claimed Anthony Taylor called Arsenal's opening goal wrongly.
Alexis Sanchez struck early but only after Aaron Ramsey appeared to have interfered with play while standing in an offside position just 10 yards out.
Courtois was adamant Ramsey scrambled his decision-making. Taylor's linesman had initially flagged the midfielder offside before reversing the decision.
'You should already be blind to not see that because I think him [Ramsey] standing there makes me stop,' Courtois said.