Newcastle boss Eddie Howe was delighted seeing his faith in his tactics paying off in victory over Arsenal.
Newcastle won 1-0 thanks to an early goal from Alexander Isak.
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Howe said afterwards: "You have to have a really strong mentality and know that the results will change if you keep doing the right things. It's been a tough week but the players have done really well.
"There was a better feeling in training after the Chelsea win, like the pressure had eased a bit.
"Today's performance was built on hard work, desire and a lot of good defending in the second half. I think we looked in good shape."