Daniel Ricciardo has admitted that Red Bull lacked the pace to compete with the front runners once conditions dried at the United States Grand Prix.
Ricciardo was among the front pack on Intermediate tyres early on and briefly claimed the lead, though dropped back through the field once slick tyres were fitted, eventually finishing 10th.
"The beginning was really fun between both Mercedes and both Red Bulls," he said.
"It was a good four-way battle. To see the Mercedes not getting away from us was awesome. I was enjoying that. In the lead we were quite quick for a few laps and it felt like old times.
"That obviously didn’t last long and once we put the slicks on we just didn’t have the pace. We struggled with the warm up with the tyres and also struggled a lot with braking today.
"It was so tricky in the dry and then obviously there were the collisions with [Nico] Hulkenberg and Carlos [Sainz]. It went downhill from then on. E
"ven though we were on slicks it was never really dry out there. The kerbs were slippery and there was still a bit of a puddle through Turns 9 and 10, so it was definitely tricky."