Follow live coverage of qualifying for the Singapore Grand Prix with F1i.
An exciting qualifying session is in store, with Mercedes looking in genuine trouble at the Marina Bay Circuit, with Ferrari and Red Bull having dominated FP3. Will Mercedes be able to respond in qualifying or will it be beaten for the first time this season?
The Singapore Grand Prix is one of the most spectacular races of the season, with the race taking place under floodlights around the city streets. Pole position is crucial, with five of the last seven races having been won from pole.
While Ferrari, Red Bull and Mercedes look set to battle it out at the front, there is a tight midfield battle emerging which for once features McLaren after disastrous races in Belgium and Italy. Fernando Alonso appears to have the edge over Jenson Button, but both drivers will be hoping to make it through to Q3.
Alexander Rossi takes part in his first qualifying session for Manor, and is confident of outqualifying team-mate Will Stevens despite both drivers having crashed on Friday. Both cars will take five-place grid penalties for a gearbox change after qualifying.
You can follow all the live coverage on F1i's live page, which can be bookmarked as it will provide commentary on every session of the 2015 F1 season.
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