Hulkenberg is the team's reserve driver and has stood in for them three times already since he last raced full time in Formula One with Renault in 2019.
Canadian Formula One driver Lance Stroll said on Wednesday he tested positive for COVID-19 after the October 11 Eifel Grand Prix but is now clear and ready to race in Portugal this coming weekend.
Formula One scrapped all four of this season's races in the Americas due to the COVID-19 pandemic on Friday and added three European rounds, including old favourites Imola and the Nuerburgring, to the calendar. While previously scheduled Grands Prix in Canada, Texas, Mexico and Brazil were cancelled, Formula One said in a statement that Portugal's Portimao will host a race for the first time.
The Mercedes driver, with a record 94 wins, is the most successful Formula One driver of all time. The following details his progression to the 2020 title.
Hamilton said he only realised the significance of what he had done when he came into the pitlane after taking the chequered flag.
Mick Schumacher made his first track appearance as a fully signed-up Formula One driver on Friday
Briton Lewis Hamilton stormed to pole position at the German Grand Prix on a mixed Saturday for Mercedes, whose misjudgement left last week's Silverstone winner Nico Rosberg 11th on the grid for their home race.