Vettel fastest at Singapore practice
Red Bull driver Sebastian Vettel set the fastest time in Friday's opening practice session for the Formula One Singapore Grand Prix.
The world champion was only five-hundredths of a second faster than McLaren's Lewis Hamilton, who sat out the final quarter hour of the session because of a minor technical issue.
McLaren's Jenson Button was third fastest, ahead of championship leader Fernando Alonso of Ferrari, Pastor Maldonado of Williams and Mark Webber of Red Bull.
The session began with the cars on intermediate tires because of damp Marina Bay track caused by an afternoon thunderstorm, but slick tires were soon applied.