Marc Marquez maintained his stranglehold on the MotoGP class in Argentina, dominating the final session of free practice from start to finish. The Repsol Honda rider led for most of the session, unseated temporarily during the final push for Q2, but claiming back top spot toward the end, before opening a gap of a couple of tenths over Jack Miller with his final lap.
Jack Miller kept his hold on second place, finishing two tenths behind Marquez on the Pramac Ducati, and just ahead of friend and rival Cal Crutchlow on the LCR Honda. Maverick Viñales took fourth on the Monster Energy Yamaha, while Danilo Petrucci had a much better day on the factory Ducati, ending FP3 in fifth spot. Franco Morbidelli was the second Yamaha across the line, taking sixth a couple of tenths ahead of Valentino Rossi.
Jorge Lorenzo made a huge step forward as the grip improved, ending the day eighth fastest in FP3, and ninth quickest overall. Fabio Quartararo made it four Yamahas in the top nine, and just making it through to Q2. Andrea Dovizioso suffered a crash with just a few minutes left in the session, and could not improve on his time from Friday. Fortunately, his Friday time was still good enough to put him through to Q2.
Results from FP3: