Massa mum on GPDA exit

The Brazilian earlier this month revealed that he decided to rescind his membership of the Grand Prix Drivers' Association because he didn't always "like the way it is run".

The 27-year-old now joins Kimi Raikkonen, Lewis Hamilton and Adrian Sutil as non-members.

"I do not want to talk about that," Massa said in an interview with the Swiss newspaper Blick.

"All I will say is that obviously the most important thing in my life, is my own life."

Blick asked Massa if he simply does not get along with the GPDA's leading stalwarts, including Pedro de la Rosa, Mark Webber and Jarno Trulli.

"No comment," he answered. "Next question, please."

His Ferrari teammate Raikkonen's poor showing at Monaco means that the points gap between the pair is now just a single point.

Massa indicated that there is no hint yet of Ferrari selecting a 'number one' with which to solely charge for the drivers' title.

"I am convinced that I can be world champion and I will fight every day that I am in formula one for that goal.

"As always, there is fair play at Ferrari," he insisted.