Ferrari's Sebastian Vettel won an incident-packed Singapore Formula 1 Grand Prix yesterday after world champion Lewis Hamilton retired early for the first time this season and a spectator set heart rates fluttering when he strolled on to the track. Hamilton was running fourth approaching the halfway point of the 61-lap race when he started losing engine power, rapidly dropping back through the field before he was told to return to the garage and call it a night.Starting from pole position, Vettel had no problems, leading all the way to take the chequered flag at the floodlit Marina Bay Street Circuit for the fourth time, despite twice losing the big advantage he had built up when the safety car was deployed.Daniel Ricciardo finished second for Red Bull with Ferrari's Kimi Raikkonen third.Nico Rosberg finished fourth for Mercedes to cut Hamilton's championship lead to 41 points with six races remaining. Vettel trails Hamilton by 49.Vettel's win was the German's third this season and the 42nd of his career, enabling the quadruple world champion to overtake the late Ayrton Senna into third place for the most lifetime wins, behind Michael Schumacher (91) and Alain Prost (51).A proven master on the slow and twisty Singapore track, Vettel gave his rivals no chance when he made a flying getaway from the front of the grid. The 28-year-old opened up a three-second lead over Ricciardo after the opening lap and was never seriously challenged. ..