Qatar winner Vinales logged a best time of 1m39.620s late on in the 20-minute session, using medium tyres front and rear in dry conditions at Termas de Rio Hondo after rain affected qualifying on Saturday.

Marquez was the Yamaha rider's closest challenger, setting a time 0.115s slower on the Repsol Honda, with erstwhile leader Cal Crutchlow dropping to third on the LCR Honda, 0.182s slower than Vinales.

Aspar's Alvaro Bautista was best of the Ducatis in fourth less than a tenth further back, followed by Scott Redding's Pramac machine, Aleix Espargaro's Aprilia and Andrea Iannone's Suzuki.

The second works Honda of Dani Pedrosa, Jonas Folger's Tech 3 Yamaha and Danilo Petrucci (Pramac Ducati) completed a top 10 split by less than seven tenths of a second.

Valentino Rossi had set the pace midway through the session, but slumped to 12th by the finish, 0.745s slower than Yamaha teammate Vinales.

Jorge Lorenzo meanwhile was 15th quickest, 0.927s off the pace, and one place ahead of factory Ducati teammate Andrea Dovizioso.

Qualifying star Karel Abraham crashed his Aspar Ducati at Turn 2 on his way to 22nd, with Jack Miller also losing his Marc VDS Honda at Turn 5.

Warm-up results:

Pos.	#	Rider	Bike	Time	Gap
1	25	Maverick Viñales	Yamaha	1'39.620
2	93	Marc Marquez	Honda	1'39.735	0.115
3	35	Cal Crutchlow	Honda	1'39.802	0.182
4	19	Alvaro Bautista	Ducati	1'39.868	0.248
5	45	Scott Redding	Ducati	1'39.964	0.344
6	29	Andrea Iannone	Suzuki	1'39.989	0.369
7	41	Aleix Espargaro	Aprilia	1'40.148	0.528
8	26	Dani Pedrosa	Honda	1'40.166	0.546
9	94	Jonas Folger	Yamaha	1'40.202	0.582
10	9	Danilo Petrucci	Ducati	1'40.288	0.668
11	5	Johann Zarco	Yamaha	1'40.308	0.688
12	46	Valentino Rossi	Yamaha	1'40.365	0.745
13	8	Hector Barbera	Ducati	1'40.386	0.766
14	76	Loris Baz	Ducati	1'40.512	0.892
15	99	Jorge Lorenzo	Ducati	1'40.547	0.927
16	4	Andrea Dovizioso	Ducati	1'40.561	0.941
17	43	Jack Miller	Honda	1'40.620	1.000
18	42	Alex Rins	Suzuki	1'40.667	1.047
19	44	Pol Espargaro	KTM	1'41.430	1.810
20	53	Tito Rabat	Honda	1'41.434	1.814
21	22	Sam Lowes	Aprilia	1'41.444	1.824
22	17	Karel Abraham	Ducati	1'41.726	2.106
23	38	Bradley Smith	KTM	1'41.928	2.308