Manchester City goalkeeper Joe Hart bemoans his side's all round performance as he is convinced they've dropped below their standards, following the 2-0 defeat to Stoke City.
Manuel Pellegerini's men were beaten at the Britannia stadium on Saturday, with Marko Arnautovic scoring twice from assists from Xherdan Shaqiri.
However, after the clash the England international refused to accept suggestions claiming the Citizens are suffering from a lack of leadership.
"We've got a great squad and Vinny is a massive part of it but Nico (Otamendi), Martin (Demichelis) and Manga (Eliaquim Mangala - suspended for the Stoke game) are good centre-halves," he told CityTV.
"After a 2-0 loss it's probably easy to say [Kompany was missed] but we'll stick together as a squad, work for each other and get through this."
City's defence have registered only two clean sheets in the last 18 matches, and the tie against the Potters was their fourth away game without a win - and the third in a row on the road without a goal.
"At the level we're playing at, we need to turn out performances of seven out of 10 at least every week and rely on some players to produce eights and nines," he added.
"That's how we should be playing and we're not. Credit to Stoke - I thought they deserved to win.
"It was a disappointing start (conceding after just seven minutes) and we couldn't recover from it. We didn't play well.
"Conditions were tough but that's English football - I said before the game no-one would be able to walk of the pitch with an excuse.
"It's not like the wind got up four seconds before kick-off - we knew what we were coming into and Stoke knew what they were coming in to.
"A few of the lads are feeling it from the amount of games we're playing but that's not an excuse."