Fan walks onto track at Singapore Grand Prix

“There’s a man on the track, there’s a man on the track!” eventual victor Sebastian Vettel exclaimed on his way to a dominant victory.Lewis Hamilton’s demise through the heart of Singapore was nearly as painful as the authorities were slow to get hold of the situation here.

It could have been worse for Hamilton, but with Mercedes bizarrely out of sorts at this testing street circuit, Rosberg could manage only fourth.

Ferrari’s Sebastian Vettel stole the show at the Marina Bay as the German did not put a foot wrong and finished the race as he started in pole position.

The 13th round of the 2015 Formula One season was interrupted on lap 37 when a man in a dark top and in shorts was seen walking past the racing cars.

‘I’m hoping it’s a one-off but that was a very, very unusual weekend to say the least.

The 28-year-old opened up a three-second lead over Ricciardo after the opening lap and was never seriously challenged even when the safety vehicle was introduced.

Hamilton was fourth, and on a different tyre strategy to Vettel, Daniel Ricciardo and Kimi Raikkonen ahead of him, when he suffered a loss of power on lap 26. So, I’d rather be with him in the same team and he wins and I’m in a third place than he’s in another team other than Ferrari.

“I’m not saying there were any guarantees but I think in the first stint we were coming on quite strong”. “It is all about analysing and finding out why, but we go to Suzuka with no headaches other than maybe worrying about the typhoon that is in forecast”.

Vettel claimed his third win of the year at an eventful staging of the night race which saw a spectator wander onto the track and Hamilton forced to retire.

Vettel, meanwhile, was back to his supreme best, driving like he had for Red Bull when he won four world titles in a row.

“If there was no safety auto we could have been close for the undercut but the two safety cars came at pretty crucial times” Ricciardo said.

“I should have known he was mental”, Button, the 2009 world champion, said over the team radio after losing part of his front wing in the incident with the error-prone Lotus driver.

Toro Rosso teenager Max Verstappen finished eighth, refusing team orders in the closing laps to move over for teammate Carlos Sainz Jr. who was ninth.

Championship points leaders Lewis Hamilton and teammate Nico Rosberg qualified fifth and sixth and Hamilton had his first retirement of the season when his auto lost power at half-distance.