Alex Marquez led the final MotoGP World Championship free practice session on Saturday morning at Termas de Río Hondo, in Argentina. Riding his BK8 Gresini Racing MotoGP Desmosedici GP24 on spec Michelin tires, the Spaniard turned a lap time of 1:37.795 which led the field of 22 riders. 

His brother, Marc Marquez  was next best with a 1:37.882 on his Lenovo Ducati Desmosedici GP25.

Frenchman Johann Zarco was third-fastest at 1:37.965 on his CASTROL LCR Honda RC213V, followed by Fabio Di Giannantonio at 1:38.017 on his Pertamina Enduro VR46 Ducati GP25; Pedro Acosta  at 1:38.211 on a Red Bull KTM RC16; and rookie Fermin Aldeguer at 1:38.372 on his BK8 Gresini Ducati GP24.