Championship leader Lewis Hamilton suffered his first retirement of the year as Sebastian Vettel romped to victory in the Singapore Grand Prix.
Vettel took his third win of the year in dominant style, controlling the race from start to finish as two safety cars led to hectic action behind.
The second caution period was caused by a man wandering along the track.
Hamilton suffered a loss of power while running fourth, dropping down the field before eventually being told to retire.
His Mercedes team-mate Nico Rosberg cut Hamilton’s championship lead to 41 points by finishing fourth.
There are 150 points still available in the remaining six races, starting in Japan next weekend.
Vettel, meanwhile, is now only eight points adrift of Rosberg and a real threat for second place in the championship if Ferrari can maintain this form.
Both Mercedes were incapable of challenging at the front as Daniel Ricciardo took second for Red Bull, ahead of Ferrari’s Kimi Raikkonen.
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