Asked about the Blues' result following the Gunners' defeat of Everton, Wenger said: "For me, big results like that have no meaning. 5-0 Is not the difference between Middlesbrough and Chelsea. I watched the first 20 minutes and you could see that Middlesbrough has one of these days. They had a bad day at the office today.
"Every little deflection went for Chelsea and they didn’t ever need to get out of second gear to win the game. I don’t believe we saw the real Middlesbrough today, they are a good side and it is a difficult place for everybody to go."