Vinales, who certified second behind Marquez on Saturday, seized the early initiative on a cool however dry Sunday morning at Termas de Rio Hondo, changing into the primary rider to dip into the 1m39s.
His reign on the head of the order was short-lived, nevertheless, as Marquez moved forward with a 1m39.334s lap, earlier than inching additional clear with a 1m39.268s after which a 1m39.187s.
The Honda rider ended the session with a 1m39.096s, 0.126s up on Yamaha man Vinales’ greatest time.
Andrea Dovizioso ensured the highest three order was equivalent to qualifying with a time 0.242s slower on the most effective of the Ducatis.
After a poor Saturday, Alex Rins made it 4 totally different producers within the prime 4 on his Suzuki, forward of prime satellite tv for pc rider Franco Morbidelli on the Petronas SRT Yamaha.
Next up had been Danilo Petrucci (Ducati), Valentino Rossi (Yamaha) and Jack Miller (Pramac Ducati).
Miguel Oliveira was a formidable ninth-fastest on the most effective of the KTMs, some seven positions forward of the Austrian marque’s prime works rider Pol Espargaro.
Jorge Lorenzo was 11th on the second Repsol Honda, mirroring the place he certified in on Saturday earlier than he had his greatest time deleted for exceeding monitor limits.
Aprilia endured a low-key session with Aleix Espargaro and Andrea Iannone putting 18th and 20th respectively, both aspect of the second manufacturing facility KTM of Johann Zarco.
Warm-up occasions: