Daniel Ricciardo said that he was confident there was more to come from Red Bull at Singapore, after finishing Friday's free practice session in fourth place just a shade over four tenths of a second behind Mercedes' Nico Rosberg.
"I am not discouraged the pace," Ricciardo insisted afterwards. "Where we are is pretty good considering where I feel we can be with the car.
"It is close as predicted – three teams all there within half a second.
"There is still a lot more we can get out of it, so if we find that then we will be looking all right tomorrow," he added.
"We had to work for it today. We can find a few things tonight."
Ricciardo looked on course to improve his time at several points during the 90-minute free practice session on the 5.065km (3.147-mile), 23-turn Marina Bay Street Circuit, only for the final sector to prove disappointing.
"We just probably got a little bit too hard into the tyres," he admitted. "You think you have the grip and it goes away, so we will look into it. We lost a lot quite a lot in the last sector.
"I could feel that it was a bit scrappy, but there are probably some things I could improve there, but we can get quite a bit from the set up.
Ricciardo discounted reports that he would be handicapped by having an older engine than his team mate Max Verstappen, who was just over a tenth faster than him in FP2 on Friday.
"I know I have an engine for Saturday and Sunday, a different one from the one we used today. I think we both have the same stuff."
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