Sebastian Vettel defends Ferrari's Singapore GP F1 strategy

Vettel successfully got ahead of Max Verstappen to take second in an opening-lap battle after qualifying only third, and chased Hamilton for the lead through the first stint.

An attempt to undercut the Mercedes for first place by pitting a lap earlier then backfired, as Vettel became temporarily stuck behind the yet-to-pit Force India of Sergio Perez and not only failed to jump Hamilton but also lost second to Verstappen again.

In addition, Ferrari put Vettel on ultrasofts while all his main rivals took softs. He was sceptical about his chances of the tyres surviving to the finish and had to drive conservatively, finishing nearly 40 seconds behind winner Hamilton.

"I will always defend the team," said Vettel when asked by Autosport about Ferrari's handling of a weekend where it had been tipped to dominate.

"The decision we took in the race to try and be aggressive, if it works then it's great.

"Today it didn't work. It didn't work by quite a bit. So we need to look into that.

"But we saw something and that's why we went for it. Inside the car it's difficult to keep on top of everything because you cannot see where you come out etc.

"Overall if you see the gap at the end it was clear that we were not fast enough in the race today. We need to understand why.

"It's largely down to how we decided to race and which tyres and for how many laps, etc.

"With what we did, we tried to get to first position and get ahead. But Lewis was too quick.

"Once you are ahead you can control the pace around here, but we never got ahead."

Vettel was able to get his ultrasoft tyres to the finish, and benefited from the pack behind being held up by Valtteri Bottas.

Even when Vettel was lapping two seconds slower than Hamilton and Max Verstappen ahead of him, he was still able to maintain a stable gap to Bottas, Kimi Raikkonen and Daniel Ricciardo in fourth to sixth.

"I wasn't very confident that we could make it to the end, but fortunately we did," Vettel added.

"It was a surprise to see. The guys in the front were disappearing, with fresher tyres I guess.

"It was surprising to see that Valtteri was not able to keep it up and he was struggling more than I was."

The result leaves Vettel 40 points behind Hamilton and Ferrari 37 off Mercedes in the constructors' championship.

"Overall I think we had a very strong package, both Kimi and I looked very competitive throughout practice," Vettel admitted.

"In the end if you look at the race result we finished third and fifth. Like yesterday probably not where the speed of our car belongs."