Singapore Grand Prix: Sebastian Vettel leads Red Bull one-two in second practice

World championship leader Sebastian Vettel sets a searing pace in second practice for the Singapore Grand Prix.

The world champion beat team-mate Mark Webber, who survived a brush with the wall on his fastest lap, by 0.604 seconds, and was over a second faster than Mercedes' Nico Rosberg in third, with Lewis Hamilton fourth.

The session was relatively incident-free, apart from an action-packed 90 minutes for Williams's Pastor Maldonado, who had several off-track moments.

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