Lewis Hamilton will aim to plunge a dagger into Sebastian Vettel's world title ambitions by upsetting his expected march to victory in Singapore -- two weeks after ruining Ferrari's anniversary celebrations at Monza.
Hamilton is distinctly second favourite against his title rival at the twisting, turning and stiflingly hot Marina Bay street circuit, which plays to Ferrari's strengths and where Vettel has won four of the nine races.
But an unexpected victory for the Mercedes driver, who edged to the front of the standings by just three points with his wire-to-wire win in Italy, would set alarm bells ringing at Ferrari.
The Italian team will be smarting after Hamilton's crushing triumph at their home circuit this month -- spoiling their 70th anniversary party, and earning boos on the podium from irate fans.
Another disappointment on Sunday in Singapore, the 14th of 20 races and the unofficial start of the title run-in, would deflate optimism of Ferrari's first world title in a decade.