Lewis Hamilton suffered his first retirement of the season 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 chaotic action behind in the chasing pack the second of those caused by a rogue man wandering along the track.
Championship leader Hamilton suffered a loss of power while running fourth, dropping down the field before eventually being instructed to retire by his team.
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.