Castrol EDGE Grand Prix Predictor players back Vettel for Singapore

The world championship leader has won three of the last four races, and has been utterly dominant since Formula 1 returned from its summer hiatus with back-to-back victories in Belgium and Italy.

That said, Singapore's street circuit presents fresh challenges after the fast blasts of the previous two tracks and while Red Bull has a good track record in the night race, both Fernando Alonso and Lewis Hamilton have also performed well there in the past.

The Spaniard is second favourite at the moment, with 24 per cent of the vote, while Hamilton has 10 per cent.

GPP expert Karun Chandhok believes this is the perfect opportunity for Hamilton to strike and match his team-mate Nico Rosberg's tally of two wins for Mercedes in 2013.

"Singapore is going to be all about qualifying, track position and getting the tyres to last so you get the optimum strategy to work," said Chandhok. "Lewis Hamilton has always gone well on street circuits and Singapore is no different.

"The Mercedes should be strong here with the higher downforce requirements like it was in Monaco although since then, the RBR cars have made big progress."

The Grand Prix Predictor is free to join and easy to play. All you have to do is sign up and test your knowledge on every F1 race weekend by predicting the top 10 finishers and more besides.

And it's not too late to compete for cool race-by-race prizes if you achieve the highest score of the weekend. Starting this weekend, we are now giving away the brand new Samsung Galaxy Tab 3 as our race-by-race prize (subject to terms and conditions).