Valtteri Bottas was third on the timesheet, carrying out tyre work for Pirelli. Mercedes’ team programme was conducted by their junior driver George Russell. Like Bottas, the GP3 racer racked up over 100 laps on his way to the fourth-best time.
Lance Stroll put Williams fifth, while at Force India test driver Nikita Mazepin and DTM star Lucas Auer – making his F1 debut – shared wheel time as they went sixth and ninth respectively, split by Renault tester Nicholas Latifi and Indonesian F2 racer Sean Gelael for Toro Rosso.
Haas’s American test driver Santino Ferrucci put the American squad tenth, while Max Verstappen was a modest 11th for Red Bull, the Dutchman having lost much of the morning session to technical problems on his RB13.
Completing the timesheet was F2 racer Gustav Malja, the Swede finishing 12th on his F1 debut with Sauber.
Testing continues on Wednesday when all eyes will be on Renault, as former Grand Prix winner Robert Kubica gets his first experience of a contemporary Formula 1 car. For more details on the full driver line-up, click here.