Maverick Vinales gets the better of Marc Marquez during opening practice for the Austin MotoGP round.

Both riders set their best time while using the medium compound tyres front and rear.

Andrea Dovizioso was the first of three Ducatis in the top six, while rookie Johann Zarco continued to impress with fourth for Tech 3.

Vinales' team-mate Valentino Rossi once again made a slow start to the weekend, in eighth, while using the soft tyres.

Cal Crutchlow was the only faller...

1.Maverick Vi?alesESPMovistar Yamaha MotoGP (YZR-M1)2m 04.923s[Lap 10/17]331km/h (Top Speed)2.Marc MarquezESPRepsol Honda Team (RC213V)2m 05.500s +0.577s[15/19]332km/h3.Andrea DoviziosoITADucati Team (Desmosedici GP17)2m 05.604s +0.681s[13/15]333km/h4.Johann ZarcoFRAMonster Yamaha Tech 3 (YZR-M1)*2m 05.790s +0.867s[17/17]331km/h5.Alvaro BautistaESPAspar MotoGP Team (Desmosedici GP16)2m 05.833s +0.910s[15/15]337km/h6.Jorge LorenzoESPDucati Team (Desmosedici GP17)2m 06.017s +1.094s[16/17]336km/h7.Dani PedrosaESPRepsol Honda Team (RC213V)2m 06.109s +1.186s[5/16]336km/h8.Valentino RossiITAMovistar Yamaha MotoGP (YZR-M1)2m 06.292s +1.369s[15/15]331km/h9.Aleix EspargaroESPFactory Aprilia Gresini (RS-GP)2m 06.411s +1.488s[14/14]331km/h10.Danilo PetrucciITAOcto Pramac Racing (Desmosedici GP17)2m 06.469s +1.546s[13/13]332km/h11.Cal CrutchlowGBRLCR Honda (RC213V)2m 06.484s +1.561s[12/13]331km/h12.Jack MillerAUSEstrella Galicia 0,0 Marc VDS (RC213V)2m 06.515s +1.592s[16/16]330km/h13.Scott ReddingGBROcto Pramac Racing (Desmosedici GP16)2m 06.646s +1.723s[14/14]333km/h14.Jonas FolgerGERMonster Yamaha Tech 3 (YZR-M1)*2m 06.692s +1.769s[15/15]330km/h15.Hector BarberaESPReale Avintia Racing (Desmosedici GP16)2m 06.786s +1.863s[9/15]336km/h16.Andrea IannoneITATeam Suzuki Ecstar (GSX-RR)2m 06.824s +1.901s[9/14]326km/h17.Tito RabatESPEstrella Galicia 0,0 Marc VDS (RC213V)2m 06.894s +1.971s[13/17]333km/h18.Loris BazFRAReale Avintia Racing (Desmosedici GP15)2m 07.127s +2.204s[12/17]325km/h19.Karel AbrahamCZEAspar MotoGP Team (Desmosedici GP15)2m 07.300s +2.377s[15/15]332km/h20.Alex RinsESPTeam Suzuki Ecstar (GSX-RR)*2m 08.006s +3.083s[10/16]330km/h21.Pol EspargaroESPRed Bull KTM Factory Racing (RC16)2m 08.128s +3.205s[6/15]331km/h22.Sam LowesGBRFactory Aprilia Gresini (RS-GP)*2m 08.292s +3.369s[13/16]328km/h23.Bradley SmithGBRRed Bull KTM Factory Racing (RC16)2m 08.740s +3.817s[14/15]326km/h

Blue Name = Rides for Factory Team.Red Name = Rides for Satellite Team.
* Rookie

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Official Circuit of the Americas MotoGP records:Best lap: Marc Marquez SPA Honda 2m 2.135s (2015)Fastest race lap:Marc Marquez SPA Honda 2m 3.575s (2014)

By Peter McLaren

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