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Free Practice 3
Follow the Belgian Grand Prix live with Eurosport. The race starts at 10:00 on 1 September 2012. Find race results, standings, stats, scores and track info. Keep up with the top F1 drivers and teams including Lewis Hamilton (Mercedes), Valteri Bottas (Mercedes) and Max Verstappen (Red Bull Racing).
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Button is fifth with Hamilton 12th; Webber and Vettel seventh and ninth.
None of them can. Alonso tops the session ahead of Raikkonen with the Saubers of Perez and Kobayashi following.
Grosjean, Vettel and Webber are the last drivers who can threaten the top order, all of whom have finished...
Webber stays seventh but has time for one more lap while Hamilton, a second off the pace, goes 12th after the chequered flag.
Raikkonen up to second with a 1m48.683s; Webber on a hot lap after taking that popular escape road at Les Combes.
Schumacher, revered at Spa thanks to his seven world titles, can only go 12th fastest with 1m49.621s.
Behind them Grosjean has separated the two Red Bulls.
Massa up to fourth.... then Button takes it from him.
Despite a moment at Curve Paul Frere, Alonso sets a benchmark time of 1m48.542s.
The two Red Bulls follow the Saubers. /// @f1elvis: "Real shame we won't see effect of Lotus' rear wing stalling device. Say they can't run it due do 'reliability issues'. Perhaps Suzuka?"
Perez clocks a 1m48.850s to lead the way before FP1 leader Kobayashi goes second in his own Sauber.
Perez and Kobayashi touring from among the top 10 drivers.
The drivers filtering out one at a time after Vettel and Raikkonen came in.
Title hopefuls Vettel and Kimi Raikkonen, second and fourth in the list, have the track to themselves almost - although some bloke called Michael Schumacher, 17th in the Merc, is also out there ahead of his 300th F1 race.
On-track activity has slowed again as mechanics tinker with the cars ahead of the final runs.
What does it take to tame one of the sport's most legendary tracks and who can come out on top this weekend? That is the question posed by blogger Will Gray this week.
Vettel now second behind his Aussie team-mate with 1:49.292.
Kovalainen said a few minutes ago that his DRS isn't opening up on the Caterham.
The order changing all the time as the times come down. Button, also on hard tyres, goes sixth with Hamilton currently 11th.
Not for long - Webber takes over with 1m49.164s, set on hard tyres.
Romain Grosjean now P1 in the Lotus with 1m49.580s.
Maldonado puts his Williams behind the Sauber with 1m50.352s.
Mexican Perez easily into top spot with 1m49.637s as a whole host of drivers re-emerge for a second run.
Glock trumps Pic for fourth but he is quickly shunted back to fifth by his Marussia team-mate.
The top order at the halfway point: 1.Alonso 2.Massa 3.Senna 4.Pic 5.Glock 6.Hulkenberg 7.Vettel 8.Perez 9.Webber 10.Grosjean
Red Bull boss Christian Horner says Formula 1 'should not be run by accountants', after hitting out at plans for the FIA to get involved in cost control.
Rosberg studies the data with his team in the garage.
Hamilton still down in 20th despite completing a few laps. Most drivers are back in the pits.
Massa, on hard tyres, slots in behind Ferrari team-mate Alonso.
Vettel has to take the escape road at Les Combes while Button returns to the garage.
Alonso, using medium tyres, leads the way with 1m50.936s.
Lewis Hamilton now flying in the sunshine. The track is not completely dry, but is getting there.
Standing leader Fernando Alonso up to third with 1m43.446s.
Glock goes second with a time of 1m54.185s.
Sounds like a transmission problem for Rosberg.
Charles Pic now second fastest in the Marussia with team-mate Timo Glock third.
The Mercedes of Nico Rosberg comes to a standstill at the Fagnes chicane. The marshalls push him out of harm's way behind the barrier. Disaster for him and the team!
Jenson Button comes out to begin his first proper run before Sergio Perez goes wide at Les Combes in his Sauber - that corner proved tricky for them in the wet too...
Vettel goes P2 with a 1m55.487s.
Senna now three seconds quicker than everyone else with a 1m52.562s.
There was bad news for Webber yesterday: he will have a five-place grid penalty for the race because of a gearbox change.
World champion Vettel in the sister Reb Bull third with 1m57.753s. Senna returns to top spot with 1m53.647s.
Williams driver Senna quickly tops it with a 1m57.562s before Red Bull star Mark Webber goes faster still with 1m56.957s.
Toro Rosso's Vergne opens the timed laps with a 1m58.079s.
Some of them even decide to stay out for a while, including Heikki Kovalainen, Jean-Eric Vergne and Bruno Senna.
All 24 drivers are out in the opening moments to get their installation laps out of the way.
Off we go then in this shorter 60-minute session.
Track temperature is 20 degrees.
It is dry and sunny this morning - a blessing for the Formula One teams who want to try out their upgrades before qualifying.
And the afternoon session was basically a write-off.
Sauber's Kamui Kobayashi topped the opening session.
Saturday morning practice for the Belgian Grand Prix at Spa assumes massive significance after Friday's virtual washout.