Marussia sporting director Graeme Lowdon says the team's current drivers Jules Bianchi and Max Chilton are "doing a great job".

Bianchi scored the first points in Marussia's F1 history at the Monaco Grand Prix, while Chilton has been closer to his team-mate on average compared to last year. With the team currently holding ninth place in the constructors' championship, Lowdon told Crash.net that maintaining the same line-up for two consecutive seasons is paying dividends.

"I think they're both doing a great job," Lowdon said. "We seem to have a good atmosphere, the drivers push each other in a healthy way - we've only had that one coming together of both cars in Canada - and this year is the first year we've carried over both drivers and I think it's worked really quite well. I think they're both learning. We've provided a pretty good, stable place for them to really advance their skills as well."

However, while Lowdon is pleased with the way the current pairing is working he says Marussia will leave a decision on its 2015 drivers until after the end of the season.

"As ever, there's 101 different influences on teams and driver preferences and the same with the drivers as well. So in terms of the line-up for next year we typically leave that until December time and see where we get to and focus entirely on trying to keep our place in the championship for the rest of this season."