Formula One championship leader Sebastian Vettel set the fastest time in Friday's practice sessions for the Singapore Grand Prix. The Red Bull driver was two-tenths of a second quicker than Ferrari's Fernando Alonso in the second session. McLaren's Lewis Hamilton third-fastest ahead of Sunday's race. Ferrari's Felipe Massa was fourth-quickest around Marina Bay, with Red Bull's Mark Webber fifth and Mercedes' Michael Schumacher sixth. Read more: http://espn.go.com/racing/f1/story/...-vettel-fastest-singapore-grand-prix-practice