SAO PAULO, Nov 12 (Reuters) - Alpine's Esteban Ocon lapped fastest in the second and final practice session ahead of a sprint race at the Sao Paulo Grand Prix on Saturday.
Qualifying for the 100km sprint race, which decides the starting grid for Sunday's main event, was on Friday with Haas' Kevin Magnussen taking a surprise first pole position in a weather-affected session.
read moreMagnussen was ninth fastest in the practice hour, with German team mate Mick Schumacher eighth.
Sargeant, 21, will race for Williams next year as replacement for Canadian Nicholas Latifi providing he secures his super-licence.
Reporting by Alan Baldwin in London, editing by Ed OsmondOur Standards: The Thomson Reuters Trust Principles.