Haas driver Romain Grosjean has admitted that he is fearful that they will be having more or less the same weekend they had in China after FP1 and FP2 concluded in Russia.
Despite praising the team over the past couple weeks for their attitude after their performance in China, the Frenchman was left disappointed by their lack of pace and precision on the Sochi Autodrom.
The former Lotus driver also called for the American team to make improvements to the car as he has not satisfied with it since two weeks ago in China.
"I think we have to make the circuit suit us," the 30-year-old revealed. "It is a very different one from China and I was expecting a bit more from the car today.
"I think we are struggling a little bit with a few issues that we may have started to have in China – getting the tyres to work properly. And that is the only big difference that we can see from the first two races. Hopefully things get better for tomorrow: we get the right answer and the guys will work hard to evaluate what we can do.
"We need to analyse. Since Friday in China I am not happy with my car, it was the case again today. We need to understand what could possibly go wrong and hopefully change it. I think there is a lot of work in progress, a lot of question marks. A lot of data. It is hard to trust everything but by tomorrow I think we find some good solutions."