May 10 (GMM) Despite starting the Spanish grand prix from the front row of the grid two weeks ago, Renault's Fernando Alonso has played down the prospect of taking on the top three teams in Turkey.

The Spaniard was a promising fourth quickest in morning practice at Istanbul on Friday, but he revealed that he could struggle to make it into Saturday's 'Q3' top ten here.

"I have good feelings, similar to Barcelona," Alonso told Spanish reporters on Friday, "but tomorrow is the moment of truth.

"The sad thing is that the big three are in another world and we still cannot be aspiring beyond seventh place," Alonso added.