After topping the pre-qualifying FP4 session despite enduring a rare mechanical failure, Marquez captured the initiative early on in Q2 at Termas de Rio Hondo using an early episode of 1m38.767s.
LCR Honda’s Cal Crutchlow was not the only other riders to breach the 1m39s at the very first conducts, but as soon as the 2nd runs started it had been Yamaha man Vinales that shot into the top of the timing screens using a 1m38.458s, the quickest lap of the weekend thus far.
But on his final flyer, Marquez responded with a 1m38.304s to catch his fifth pole in six efforts at Argentina, beating Vinales by 0.154s.
Ducati’s Andrea Dovizioso temporarily went instant behind Vinales using some time just a hundredth of a second slower, but had been demoted to third party if Marquez transferred into the top.
Valentino Rossi narrowly missed a spot on front row having some time 0.241s off the pace on the 2nd mill Yamaha, while Jack Miller completed the top five on the Pramac Ducati.
Petronas Yamaha duo Franco Morbidelli and Fabio Quartararo bagged seventh and sixth on the grid ahead of Crutchlow, that failed to improve on his second run.
The opening segment of qualifying was topped with Nakagami, who punched in a young lap of 1m39.279s after which improved to your 1m39.064s to keep on top all through.
Aprilia’s Aleix Espargaro held the other Q2 transfer spot following the opening runs with a time under a tenth slower than Nakagami, however, he had been demoted by younger brother Pol at the closing stages.
That means he will headup , ahead of an astonishing Miguel Oliveira on the best of the Tech 3 KTMs and Karel Abraham’s Avintia Ducati.
Alex Rins could muster only the sixth-best time in Q1 on top of their Suzukis and begins Sunday’s race in 16th, three places ahead of rookie teammate Joan Mir.
Johann Zarco will begin his second race for KTM out of 18th, while new Aprilia recruit Andrea Iannone ended up 12th and slowest of all in Q1, consigning him into the back of the grid.