Jonathan Woodgate has vowed to improve his performances for Stoke City, hopefully starting with the match against his old club Tottenham on Sunday.
The former Real Madrid man thinks he started well for the Potters but has failed to maintain that level of performance.
He said: "My form hasn't been up to scratch and I know that myself, I have always set myself high standards, so when you don't play so well you do tend to get disappointed.
"Without a doubt there is a lot more to come from me, I am certain of that. I need to start upping my game now because the other lads have done superbly well over the last week or two."
Stoke had gone eight games without a clean sheet before the 1-0 victory at Everton on Saturday where Ryan Shawcross and Robert Huth resumed their old central defensive partnership and recorded a shut out.
Whoever plays at the back for Stoke on Sunday will have to be at their best against Spurs who are in a rich vein of form at the moment.
When asked about his former side Woodgate said: "They are so dangerous right now, they look like they can score goals every time they go forward. Whether it be the strikers, wingers or even defenders, they have players all over the pitch who can hurt you.
"I'm certain that they will finish in the Champions League places this season."