Frenchman Quartararo's victory was also the first for Petronas Yamaha as he finished ahead of Yamaha's Maverick Vinales in second, while Ducati's Andrea Dovizioso finished third.
Victory moved Quartararo to 50 points in the world championship standings, 10 points ahead of Vinales.
Oliveira leaves it late to snatch win at Styrian Grand Prix.
Alex Marquez celebrated a first MotoGP win -- even if only virtually -- in a '#StayAtHomeGP' esports race featuring 10 top riders including older brother and six-time world champion Marc.
Valentino Rossi will decide this year whether to call time on his stellar MotoGP career after Yamaha announced on Wednesday the signing of French youngster Fabio Quartararo as the Italian great's replacement from 2021. Quartararo, 20, will remain with the Petronas Yamaha non-works team for one more season before stepping up alongside Spaniard Maverick Vinales, whose contract was extended on Tuesday, at the factory outfit.
Six-times MotoGP world champion Marc Marquez can celebrate his first win of the season on Sunday when the Spaniard takes part in a virtual race from the comfort of his home. The season is not due to start until mid-May at the earliest.
Summary of sports events and persons who made news on Sunday