McLaren's Lewis Hamilton arrives for the third practice session on Saturday of the Singapore Grand Prix at the Marina Bay circuit
Bernie Ecclestone is an interested observer this weekend with F1's supremo backing Red Bull's Mark Webber for the world title
It is not just the drivers who need to practice, with the Ferrari mechanics going through pit stops ahead of Sunday's grand prix
Championship leader Mark Webber looks relaxed ahead of the practice as he gets set to defend his narrow five-point lead
The unique three-mile Marina Bay circuit is lit up by 1600 lights, emulating daylight for the drivers as much as possible even though all the main action takes place at night
Red Bull's Sebastian Vettel is the man to catch as he posts the fastest time of Saturday practice
Qualifying begins badly for Ferrari's Felipe Massa after his car stops midway through a lap and he has to begin Sunday's race from the back of the grid as a result
Vettel is again the man to catch as he sets the pace going into the final Q3 session
But a stunning late lap from Ferrari's Fernando Alonso sees the Spaniard grab pole position with Sebastian Vettel second and Lewis Hamilton third
World champion Jenson Button is fourth on the grid with Mark Webber making up the top five
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