Formula 2 leader George Russell was fastest in practice ahead of the deciding round in Abu Dhabi.
The ART Grand Prix driver posted a 1m51.720s early in the session, which he ended 0.164s ahead of second-placed Antonio Fuoco of Charouz.
Luca Ghiotto was more than half a second slower than Russell in third, with Nirei Fukuzumi fourth for Arden.
Fukuzumi’s new team-mate and Macau Grand Prix winner Dan Ticktum was slowest of all in his first time in an F2 car since a pre-season run-out with DAMS, 2.5s off Russell’s pace.
Nyck de Vries was fifth ahead of Roberto Merhi, Louis Deletraz and Lando Norris.
Russell’s rival Alex Albon was ninth, with Artem Markelov completing the top 10.