Stoke progressed in the League Cup after a penalty shoot-out against Championship Birmingham but skipper Ryan Shawcross says the team are not happy with their display.
"It's brilliant we're in the next round but that's the only thing we take from the game to be honest.
"It was a very disappointing performance from everyone and we need to have a good look at ourselves before Saturday to make sure we're better because that's not good enough.
"To get through to the next round is great but you've got to have the performance to match that. We should have cruised through the game but we didn't.
"We've got to be more professional, we've got to see the game out. It's a disappointing performance but ultimately we're through to the next round."
For the big stories and the banter follow us on Twitter: @tribalfootball