Formula 1 rookie Max Chilton says the uncertainty surrounding the identity of his Marussia teammate has been a big advantage as it has increased the amount of track time available to him during pre-season.
The 21-year-old Briton, who is stepping up from GP2 this year, drove the MR02 on the opening day of F1's final test on Thursday, and went ninth fastest.
With Timo Glock having been released from his contract in January, and Luiz Razia's future with the team now in doubt, Chilton has now completed seven of the nine days of testing this year; more than any other driver. He believes that this has been of huge benefit to both himself and the team as he acclimatises to life in grand prix racing.
"It's perfect for me," he said. "For the team, if you have the same driver every day, you get constant feedback. It's going really well. I'm happy with my progress and I've really started to learn things.
"We had quite a bit of rain on Thursday and even that was a help, because I wouldn't want to go into a wet race without having driven on the intermediates and the wets. Now I've done plenty of laps on both those kinds of tires, so it wasn't a wasted day. It doesn't help the team, because we need to do more dry setup work, but for me it's not a problem at all."
Marussia has not revealed whether Razia will drive at the final Barcelona test.