Lewis Hamilton led almost from lights to flag to claim his second grand prix of the season, while Jenson Button again benefited from the misfortune of others to shore up his world championship advantage on the streets of Singapore.
Having made a lightning start, Hamilton was only briefly troubled, initially as Nico Rosberg tagged along with the McLaren, and later when Sebastian Vettel refused to be shaken off after a safety car restart, but looked comfortable as he paced the field to the chequered flag under the lights of Marina Bay. The world champion only lost the lead after taking his second fuel and tyre stop, allowing 2008 race winner Fernando Alonso a handful of laps at the front, but retook the advantage when the Spaniard stopped and cruised home over seven seconds to the good.
Rosberg appeared on course for another second place in Singapore, but made an error exiting the pits on his first stop and was relegated into the midfield by the ensuing penalty for crossing the blend line - a problem compounded by the timing of the race's only safety car, which was called for a collision between fellow Germans Adrian Sutil and Nick Heidfeld on lap 21.
Vettel took up the mantle of chief pursuer to Hamilton, but made his own mistake by exceeding the pit-lane speed limit on his second stop, although the damage was not as severe as that endured by his Williams rival. The Red Bull driver came home as the best-placed title contender, in fourth place, despite concerns over his brakes after team-mate Mark Webber crashed when his right front disc failed.
Vettel's problem promoted yet another German, Timo Glock, into an eventual second, the Toyota team being rewarded with a solid run back to the podium as Glock equalled his best finish in F1. Alonso completed the podium for the beleaguered Renault team, which had earlier seen rookie Romain Grosjean post the race's first retirement.
The Brawns were also in brake trouble, forcing Button to call of his late-race pursuit of Vettel and settle for fifth, enough to extend his lead over team-mate Rubens Barrichello, who chased the Briton across the line in a race that almost made it to the two-hour time limit.
Heikki Kovalainen and Robert Kubica rounded out the scorers.
Full report and result to follow....