Sebastian Vettel posted the quickest time for Red Bull in the second free practice session for the Singapore Grand Prix as each of the 20 drivers in the field were able to better the times they posted earlier in the day.
Having only run limited laps during the first session due to his need to conserve engines, Vettel enjoyed a busier second session as he completed over 30 laps under the Singapore lights.
Vettel's time of 1min 48.650secs saw him top the times by nearly three tenths of a second ahead of Fernando Alonso, who gave Renault reason to cheer by posting the second quickest time of the day. Heikki Kovalainen was third for McLaren ahead of Nick Heidfeld's BMW, championship leader Jenson Button and the second Red Bull in the hands of Mark Webber.
Webber had earlier been the man to beat when the cars returned to the track to start the second session of the day, but his hopes of topping the times came to an end when he lost the rear end of the car exiting the final corner and suffered a spin into the pit wall, damaging the left hand side of his car and bring out the red flag.
Nico Rosberg was seventh quickest for Williams, while Timo Glock, Lewis Hamilton and Robert Kubica completed the top ten. Hamilton however was one of a number of drivers who could have gone quicker late in the session had it not been for traffic on one of his quickest laps.
Rubens Barrichello, quickest in FP1, had to settle for eleventh place, while the Ferrari duo of Kimi Raikkonen and Giancarlo Fisichella ended up down the order in 14th and 16th positions.
Having crashed in FP1, Romain Grosjean was late starting the session as Renault finished repairs to his car and was 19th, ahead only of fellow rookie Jaime Alguersuari.
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