The north London side had to come from two goals down to claim a 2-2 draw with their bitter local rivals last Sunday after some poor defending allowed Spurs to score twice in the first half.
The Gunners have been widely criticised for their performances at the back in recent seasons and it would seem that they still have some significant issues to address.
Arsenal brought in David Luiz from Chelsea FC in the summer transfer window but the Brazilian has not yet been able to help the Gunners keep a clean sheet in the Premier League in the games he has started.
And England legend Shearer was clearly not impressed by what he saw from the Gunners at the back during their draw with Spurs.
Writing in his column for The Sun, as quoted by the Evening Standard, Shearer said: “If anything, Arsenal are worse now than they were last season.
“From start to finish, it was embarrassing how easy it was for Tottenham to get their two first-half goals.
“Kieran Tierney is yet to come in but on this evidence they certainly haven’t improved defensively.”
He added: “Sokratis didn’t need to go for the header for Christian Eriksen’s opening goal. Then David Luiz dived in again, gambling in the way he does all too often.
“And goalkeeper Bernd Leno should have done better than just palm the ball into Eriksen’s path. From start to finish, it was embarrassing how easy it was for Tottenham to get their two first-half goals.
“Yes, Spurs stuck away their chances beautifully, including Harry Kane’s spot-kick.
“But what on earth is Granit Xhaka thinking when he lunges in to give away the penalty? There has to be a moment when he thinks ‘I have to slow down here because I’m going to wipe him out’ – but he never thinks about it at all.”
Arsenal will attempt to get back to winning ways in the Premier League when the Gunners take on Watford away from home on Sunday 15 September.
The north London side have taken seven points from their opening four games.
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