Valtteri Bottas has revealed that he was told not to attack Felipe Massa in the closing stages of the Malaysian Grand Prix after his team-mate ignored team orders.

Massa was told to move over for Bottas as Williams believed he was faster and could attack Jenson Button, who was running just ahead of the pair. However, Massa ignored the call and held off his team-mate until the end of the race.

Asked if he had been told he could pass Massa to have a go at Button, Bottas replied: "Yes, that's correct, then in the last two laps I wasn't allowed to overtake him anymore."

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With Massa believing the McLaren was too strong on traction to allow either Williams to find a way past, Bottas disagreed.

"Because I delayed my first pit stop a little bit I think always at that point my tyres were in a little bit better condition than Button and Felipe in front. I just felt like I had a bit more pace today than those two cars so I really felt like I could have a good shot at Jenson. I think there could have been a chance maybe to get more points for the team."

And Bottas also believed Williams had not been able to explore its full potential once again after suffering in another wet qualifying session.

"I think Ferrari seemed to be quite quick, but Force India we should be able to fight with them. It would be another story if we qualify where we should qualify, so what we need in the next few races is a good, clean Saturday. A good qualifying makes our race much easier. I've now had two races starting from the back and there's always this little bit of extra work you need to do.

"When you're coming through the field your tyres are also suffering a little bit more and you need to sometimes compromise your strategy a little bit so it's not ideal. It would be nice to have a good qualifying in Bahrain and then we'll really see what we can do if we can start from the top ten."