Belgian GP: Kimi Raikkonen leads Ferrari one-two in final practice

Quickest in practice one and a close second to Lewis Hamilton on Friday afternoon, Raikkonen then set the fastest recorded lap on the current configuration of the legendary Spa-Francorchamps circuit on Saturday morning with a 1m43.916s.

Rain in the build-up to practice three meant initial laps were on intermediates tyres and no lap times were put on the board until a quarter of the way into the 60-minute session.

Soon after Toro Rosso's Daniil Kvyat kicked off the meaningful running with a lap on super-softs, Hamilton picked up where he left off on Friday, going top with a 1m45.480s effort on the same tyre.

But he was down to third at halfway point, leapfrogged by both Ferraris.

Raikkonen had first lapped a tenth off Hamilton and then cleared the Mercedes man with a 1m42.422s effort, while Vettel slotted into second, 0.036 seconds off, as the frontrunners' super-soft runs concluded.

Red Bull was first among the big teams to send its drivers out on ultra-softs, but Daniel Ricciardo's first flying lap on the compound was derailed by yellow flags - brought out by junior team driver Kvyat, who parked his Toro Rosso to the side of the Kemmel straight after reporting a loss of power.

When the car was cleared away - a small fire developing in the process - Ricciardo took the top spot with a 1m45.286s lap, before team-mate Max Verstappen improved the benchmark to a 1m45.034s.

But Red Bull's time at the top was shortlived, as Raikkonen clocked in the current Spa layout's first sub-1m44s lap with his first flyer.

Hamilton moved up to second, two tenths off, only for Vettel to reinstate a Ferrari one-two with a lap 0.001s better than the Mercedes.

There would be no further improvements among the top three, but their margin of almost a second over their nearest rivals remained until the chequered flag.

Verstappen and Ricciardo made no gains either, finishing fourth and sixth, split by the Mercedes of Valtteri Bottas, who distinctly trailed Hamilton on both super-soft and ultra-soft pace having made errors on his first flying laps.

Jolyon Palmer was a standout performer in seventh, just two tenths off Ricciardo and more than half a second clear of 11th-placed Renault team-mate Nico Hulkenberg.

Force India's Sergio Perez was eighth, with Toro Rosso's Carlos Sainz Jr and McLaren's Fernando Alonso making up the top 10.

Williams driver Felipe Massa, returning to action after the crash that meant he barely did any laps on Friday, was one spot behind 15th-placed team-mate Lance Stroll - and is under investigation for ignoring double-waved yellow flags.

FP3 times