The match went ahead despite a suicide attack just a few miles from the stadium in the twin city of Islamabad, which killed at least 12 people and left several injured.
Italy's Jannik Sinner got his title defence off to a solid start with a dominant straight sets win over ailing Canadian Felix Auger-Aliassime at the ATP Finals on Monday in Turin.
Ferrari left Brazil after slipping from second to fourth in the constructors' title race, and will be looking for a change of luck in the next race in Las Vegas.