Medium tyres for the Merc pair and Piastri, evidently confident of getting a decent benchmark in on the C3.
Hamilton gets a lap in, 0.155s off Leclerc, while Piastri is 1.3s off. Norris goes third, 0.357s off Leclerc.
Russell then posts a 1m36.241s, a second down on those mediums, and Antonelli is a tenth quicker than his team-mate.
Verstappen is 0.015s shy of Leclerc, and goes second; Hadjar drops into third, also within a tenth.