Chelsea boss Frank Lampard was left frustrated after his side allowed a two-goal lead to slip against Southampton.
The Blues drew 3-3 at Stamford Bridge, where they seemed to be in complete control after Timo Werner’s first-half brace.
But another error by much-maligned keeper Kepa Arrizabalaga, who was involved in a mix-up with Kurt Zouma, gifted the visitors their second goal.
And Lampard admitted: “A mistake will always concern you. It was a situation we should have dealt with in much more simpler terms and then you give them a goal and you make it 2-2.
“If you’re going to concede those kinds of goals it doesn’t matter how well you play in periods of games. It’s something that we can’t have in our game.”
On a brighter note for Chelsea, summer signing Werner was outstanding up front.
“They were really good individual goals,” Lampard said.
“Timo getting those goals will be great for him in terms of his confidence. We’ll see a lot more of that from him.”