Singapore: World champion Sebastian Vettel won an incident-packed Singapore Grand Prix on Sunday to strengthen his chances of claiming a third successive Formula One title.
Vettel inherited the lead from McLaren's Lewis Hamilton, who retired on the 23rd lap with a gearbox failure, and withstood the challenge of Jenson Button through two safety car periods on the way to repeating his victory at the same circuit a year ago.
Championship leader Fernando Alonso took third spot in his Ferrari but saw his advantage over Vettel reduced to 29 points with six rounds remaining.
Force India's Paul di Resta claimed a creditable fourth spot, his best finish in Formula One.
"You're back in this championship, well done," Red Bull team principal told the German over the team radio.
After Narain Karthikeyan crashed on lap 33, the safety car was deployed for a first time and it returned to the track a lap after coming in when Michael Schumacher slammed into the back of Jean Eric Vergne's Toro Rosso.