Team boss John Booth said qualifying for the US Grand Prix had been an 'important day' for Marussia after the team was able to outqualify Caterham with both cars for the first time.

Timo Glock and Charles Pic secured 19th and 20th on the grid at the Circuit of the Americas to give the team a boost ahead of the penultimate race of the year - where it will seek to maintain its hold on tenth place in the championship standings.

"Another good day today," Glock said. "I think we concentrated on the right things, although it was a challenge through FP3 to get to that point as it is hard to put a good single lap together here. In qualifying I thought I had a strong lap and the tyres were really coming in, but towards the end I had a bit of wheel lift and the rear felt a bit strange. I think we could have gone quicker because the tyres were improving so much lap by lap, but because of the yellow flags there was no chance for more improvement.

"However, we are almost 0.8s ahead of the Caterhams and we have to be very pleased with that. This is great development from the team and although it seems like we remind everyone every race just now, we've managed all that without the advantage of KERS and that is a significant point. I'm very excited for the race and I hope we can continue the good work."

Having admitted in Abu Dhabi that the team had to beat Caterham on track to be sure it didn't get caught out by a freak result, Booth was understandably thrilled with the result of the session - especially as the team had been on the back foot in final practice after Pic clashed on track with the Sauber of Sergio Perez.

"Today is an important day for the whole team as it represents the culmination of the aggressive development programme we have undertaken since the mid-season," he said. "We have demonstrated that we are now faster than the Caterhams after both cars achieved the objective of outqualifying them.

"We are looking forward to the race tomorrow now. Tyres will be the hot topic and we must ensure we maintain this momentum and execute our strategy perfectly to enjoy another fantastic fight with the cars around us."