Chelsea attacker Eden Hazard admits they were outclassed by Arsenal on Saturday.
The Gunners thumped Chelsea 3-0 at the Emirates.
Hazard said: "There's no looking for excuses. They have eaten us in the tackle. We came here to win the game, but we made expensive mistakes.
"We had a very bad second-half.
"We did not put in all the ingredients to win the game and that's unfortunate."