Felipe Massa says sixth place was the 'best possible' result for Williams during the Chinese Grand Prix.
Massa started from 10th position but made progress at the start and was subsequently able to repel Lewis Hamilton during the final stint of the race as he bagged eight points.
"I'm really happy, it was a fantastic race for me even if I’m not on the podium, finished in the best position I could, taking care of tyres in a better way," he said.
"I did a very good start, the only car I could hold at the end was Lewis which was fantastic; when I got him out of the DRS, I knew it was finished.
"Red Bull and Ferrari: it was impossible to keep them behind as they were quicker, but the race was perfect and I’m very happy, it gave me a lot of understanding with the tyres."
Team-mate Valtteri Bottas was compromised by the collision between the Ferrari drivers at the start and wound up 10th.
"At the start I lost a few places with the crash unfortunately so it didn’t come to me," he rued.
"The first couple of stints were going well and I was making up places but in the last stint I don’t know what happened, on the Mediums I couldn’t keep up the pace but struggled more."