The season opened at the , won by Jenson Button with teammate Rubens Barrichello in second, giving the team a 1–2 on its début. Red Bull's Sebastian Vettel had been running in second until he collided with BMW Sauber's Robert Kubica. The accident meant the race finished behind the safety car, with Toyota's Jarno Trulli eventually classified third despite McLaren's false protest he had illegally overtaken Lewis Hamilton. Reigning champion Hamilton was disqualified from the Australian race for lying to the stewards and at the following Malaysian Grand Prix there were reports he was on the verge of quitting. The race was equally dramatic, being stopped because of monsoon-like conditions, meaning only half points were awarded for only the fifth time in F1 history. Button mastered the changing conditions for his second win, while quick starting Nico Rosberg dropped to eighth when the race was stopped. In the interval between races, the controversial double diffusers, used by Brawn, Williams and Toyota, were declared legal by the FIA, ending the fight over their use. The Chinese race also took place in wet conditions, with the rain throughout the duration of the race necessitating a safety car start and causing several accidents. Vettel led teammate Mark Webber to Red Bull's first win in Formula One, ahead of the two Brawns and McLarens.