Postpublished at 14:46 British Summer Time 17 September 2016
Jack Nicholls
Radio 5 live Formula 1 commentator
Grosjean has been complaining about the handling of his car all weekend. He will have more to complain about now!
Rosberg on pole, Ricciardo 2nd, Hamilton 3rd
Vettel starts last
Online race coverage begins 11:30 BST Sunday
Gary Rose
Jack Nicholls
Radio 5 live Formula 1 commentator
Grosjean has been complaining about the handling of his car all weekend. He will have more to complain about now!
1) Rosberg 2) Hamilton 3) Ricciardo 4) Verstappen 5) Raikkonen 6) Kvyat 7) Sainz 8) Alonso 9) Perez 10) Hulkenberg
11) Bottas 12) Massa 13) Button 14) Gutierrez 15) Grosjean 16) Ericsson
"I don't know what happened," says Romain Grosjean before he climbs out of his car and heads back to the paddock.
Plenty of drivers have had their lap ruined by that crash, but not Fernando Alonso! He's managed to leap into the top 10 as the chequered flag is waved.
A crash! It's Romain Grosjean, who has slid his Haas sideways into the barrier at Turn 10. That's effectively put an end to the session.
Tom Clarkson
BBC Radio 5 live commentator
There has been at least one safety car of at least four laps in each of the last eight years at Singapore. So Red Bull, by using the super soft tyres, are obviously building that into their strategy. They will have the advantage on those tyres over Mercedes should the safety car come out tomorrow.
As it stands, Jenson Button, Sergio Perez, Esteban Gutierrez, Fernando Alonso, Romain Grosjean and Marcus Ericsson are in the drop zone.
The top 10 as it stands is:
1) Rosberg 2) Hamilton 3) Ricciardo 4) Verstappen 5) Raikkonen 6) Sainz 7) Hulkenberg 8) Bottas 9) Kvyat 10) Massa
Sebastian Vettel, speaking Radio 5 live Sports Extra: “I was going round on three wheels, which doesn’t really work. I wanted to come in, but we stayed out, and then I came in because it was just hopeless, we weren’t quick enough. But, with just or three minutes or four minutes, there was no time to fix it.”
Red Bull, meanwhile, send their drivers out on super-softs and Daniel Ricciardo subsequently goes third quickest with 1:43.933. Max Verstappen does 1:44.1112 to slot in fourth.
That's an excellent time from Ricciardo, just half a second down on Lewis Hamilton on the harder, and slower, tyres.
Stunning lap from Nico Rosberg! Lewis Hamilton was quicker through the first sector but he lost a massive amount in the middle sector while Rosberg sailed round to post a 1:43.020 to go quickest. Hamilton crosses the line four tenths slower.
Well played.
Just seen replays of Sebastian Vettel's lap before he pitted and he was circulating on three wheels on some of the corners.
Lewis Hamilton and Nico Rosberg are out and on a lap. Hamilton, so far, is looking strong. He is fastest of all through the first sector.
Marcus Ericsson is also on the track in his Sauber.
Sebastian Vettel, understandably, sounds very frustrated.
"We decided to try and pit to fix the car but there wasn't time," he said. "I'm very disappointed."
He's won four of the last five races in Singapore but it will take something special for him to add to that tomorrow.
Swings and roundabouts...
The timer is counting down from 15 minutes as the battle to get into the top begins.
Jack Nicholls
Radio 5 live Formula 1 commentator
You feel like Red Bull are running at maximum velocity already, while Mercedes haven’t stretched their legs at all yet.