Singapore GP: Sebastian Vettel leads Ferrari one-two in practice 3

With the Mercedes power advantage negated on the tight city streets, Sebastian Vettel led a Ferrari one-two in final practice for the Singapore Grand Prix, while both Mercedes struggled and were more than one second off the pace.

Vettel clocked a time of 1m45.682s on the super-soft tires, 0.450s clear of his Ferrari team-mate Kimi Raikkonen.

Red Bull's Daniil Kvyat and Daniel Ricciardo were third and fourth respectively with world champion Lewis Hamilton down in fifth, 1.120s adrift, and the other Mercedes of Nico Rosberg sixth.

Fernando Alonso, whose McLaren team hoped the low-speed nature of the circuit would help mask the power deficit of its Honda power unit, was seventh, a few thousandths behind Rosberg.

Red Bull and Ferrari looked quick in second practice on Friday, with Kvyat topping the times, but Mercedes was expected to hit back on Saturday.

The Manor drivers were last as usual, with American Alexander Rossi burying his teammate Will Stevens on his first full grand prix weekend.

Results