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They have performed very well, but it is not over yet for them. Arsenal is a good example for a team that destroys their own performance by dropping so hard. I didn't expect Arsenal to win every single game, but when somebody said that they wouldn't win for four games in a row, ...
Yes, indeed the struggle is not over, moreover, Newcastle's position is still not secure in the third place. There is still Man United who still have 1 game in hand while their pins are only 2 points different. Wouldn't it be quite interesting to see both of them?
If Arsenal are alone, they have lost their chance and fell to second place, replaced by Man City.