Lewis Hamilton quickest in practice for the Singapore GP

Hamilton's Mercedes teammate Valtteri Bottas, who recovered from hitting the wall in the first session, was fourth.

Marina Bay Street Circuit (Singapore): Mercedes driver Lewis Hamilton was fastest in Friday's second practice at the Singapore Grand Prix in an early indication the Formula One championship leader will be tough to beat in Sunday's race.

Hamilton set the fastest lap of 1 minute, 38.773 seconds, 0.184 seconds quicker than Red Bull's Max Verstappen, who led the first practice session. Ferrari driver Sebastian Vettel, who has gone 22 races without a win, was third.

Hamilton's Mercedes teammate Valtteri Bottas, who recovered from hitting the wall in the first session, was fourth.

Hamilton heads into the race with a 63-point lead over Bottas with seven races remaining.