Arsenal goalkeeper Bernd Leno, who totally misjudged a late cross, slammed for Southampton blunder.
Charlie Austin’s goal proved to be the winner as Southampton prevailed 3-2 on Sunday, which saw Arsenal end their 22 games unbeaten run.
Sky Sports pundits Roy Keane and Graeme Souness put the blame squarely at the German’s feet.
On Leno, Keane said: "It's poor decision-making. As soon as it leaves Shane's foot you're thinking, he's in trouble here. He's having a good chat about it afterwards but he shouldn't, he should be straight down that tunnel and hanging his head. They talk about the steel in this Arsenal team. I still have huge doubts about this defence."
Ex-Liverpool and Southampton manager Souness also lamented Leno for his late error in goal.
He added: "You've got to have a close look at the goalkeeper here. He makes his mind up to go for it but having been at the near post, it's totally the wrong decision for the goalkeeper to make - to go from the near post to the far post. He should have backed on to his line here. It's not a great ball, that's what's tempted him."