Reigning world champion Jenson Button held off teammate Lewis Hamilton to win a traditionally wet Chinese Grand Prix for McLaren on Sunday and see him replace Ferrari's Felipe Massa atop the driver standings."It is my best victory," said Button, who started from fifth on the grid, one ahead of Hamilton. Button benefited from prudent tire changes as patchy rain played havoc with all the drivers and gave them different conditions to deal with on each lap."It wasn't just the luck of calling the weather, we also had the pace," said the British, who joked that he was going to hire a car and race the other F1 drivers back to Europe as a volcanic ice cloud from Iceland continues to throw world air traffic into chaos."We still don't know where we are in the dry, but we've proved what we can do in the wet," he added. McLaren, which now leads Ferrari by 19 points in the constructor standings, has found itself playing second-fiddle to the faster Red Bulls and Ferraris this season .