Postpublished at 14:19 British Summer Time 16 September 2017
Carlos Sainz bangs the Toro Rosso into third place and team-mate Daniil Kvyat goes sixth. Impressive.
Vettel to start from fourth Singapore pole; Hamilton in fifth
Red Bulls of Verstappen and Ricciardo will line up second and third
Eliminated Q2: Palmer, Perez, Kvyat, Ocon, Grosjean
Eliminated Q1: Magnussen, Massa, Stroll, Wehrlein, Ericsson
Mercedes' Hamilton leads Ferrari's Vettel by three points in title race
Jamie Strickland
Carlos Sainz bangs the Toro Rosso into third place and team-mate Daniil Kvyat goes sixth. Impressive.
Q1 ends.
Jennie Gow
BBC Radio 5 live pit-lane reporter
Williams' year hasn't been great, on this track, it shows.
On a circuit where it's about your chassis and the down-force of the car, they just haven't got it.
Massa heads out... do or die time for the Brazilian.
Final runs coming up.
Ericsson, Magnussen, Wehrlein, Stroll and Massa going out as things stand.
Tom Clarkson
BBC Radio 5 live commentator
Vandoorne has really come alive this weekend. He's gaining in confidence every race.
This is such a confidence track - blind corners pretty much all the way around - so you have to nail the throttle and have a lot of belief in what your car can do.
Apparently, despite what the TV graphics said, the smoking Toro Rosso was that of Kvyat but there does not seem to be any major problem.
Grosjean goes into 10th place. Ericsson also sets a time but he remains in trouble,.
Magnussen's Haas is now in the bottom three.
So, going out at present are:
Wehrlein, Stroll, Massa, Grosjean and Ericsson, the latter having not gone out.
Smoke pouring out of Sainz's Renault engine in the Toro Rosso as he comes into the pits...
It;s changing all the time.
Verstappen now leads the way on the 1:42.010, then it's Ricciardo 0.053 back.
Hamilton in third, 0.4 adrift. Vettel only sixth at present.
Tom Clarkson
BBC Radio 5 live commentator
Lewis Hamilton has just set the fastest in the sector where that oil is meant to be, so looks like it's clearing up.
Hamilton's slots into second place.
Current top 10: Ricciardo, Hamilton, Verstappen, Bottas, Raikkonen, Vettel, Perez, Ocon, Vandoorne, Hulkenberg.
Ricciardo and Verstappen out front for Red Bull at the moment. Hamilton is on a hot lap...
The Brazilian in the Williams has hit the wall and he has a puncture on his right rear tyre.
Daniel Kvyat in the Toro Rosso says the entire final sector feels slippery, so not just confined to Turn 20.
Jack Nicholls
Radio 5 live Formula 1 commentator
There is some blue, wispy smoke coming out of Fernando Alonso's car in some corners. I don't want to cause any alarm but I've seen it in two or three corners.
Tom Clarkson
BBC Radio 5 live commentator
Vettel is a much quieter character, he's not in your face in anyway, so his profile as a world champion is much lower.
But, he won those four championships at Red Bull when he had far and away the most dominate car in each of those seasons, so yes, there are still critics out there who say: "we want to see him in a proper fight."
There are question marks, but I actually think we're going to see his true colours this weekend.
Brief waved yellows as Haas' Grosjean disappears down an escape road. Quickly back on track.