Arsenal boss Unai Emery admits their energy and pressing was key to beating Chelsea yesterday.

Maurizio Sarri says his Chelsea players failed with their attitude.

And Emery said: "When we are playing Chelsea or us, at home [or] away, maybe we can speak about this mentality. Every team wants to play [with] the same speed or the same mentality at home and away.

"I think the circumstance in the match is doing the way in 90 minutes. We started at the beginning very strongly with the high pressing. But when you are playing against one team who start [attacks] with long balls, you cannot press. But today, the [structure] was very clear - build up with possession and the centre backs and Jorginho. We worked to do the pressing and the reason is that it can be closer to their box and transition very quickly to control the match when they have the ball, with our pressing. But also, they can break your pressing and then take chances to score.

"The circumstance is leaving you this way for better or worse. Today, I think every circumstance was going and coming with us. The mentality is good, the atmosphere today was very good with our supporters. I think they helped us a lot and we want to find the same performance, the same ideas and mentality when we are playing here and when we are playing away. But also at the moment, we cannot find [that]."