Just as a week earlier in Mugello, Nakagami causes a surprise by leading a dry but overcast morning warm-up for the Catalunya MotoGP in Barcelona.

While Nakagami (starting 14th on the grid), Vinales and Morbidelli ran the medium rear tyre this morning, the likes of pole qualifier Quartararo, Rossi and Binder were among those to fit the hard rear, despite the cooler conditions.

Vinales fell at the end of the session on a slow lap, having presumably let the tyre temperature drop too much. The Spaniard apologised to his mechanics when he returned to the garage.

Medium or hards are expected to be the choice for the race, front and rear, but if the increased cloud cover remains it is expected to nudge more riders towards the medium despite predicted high tyre wear in the grand prix.

Alex Rins is absent after suffering a wrist fracture while training at the track on his bicycle on Thursday morning.

Vinales is working with new crew chief Silvano Galbusera for the first time this weekend, having split form Esteban Garcia following Mugello.

Turn 10 in Barcelona has been redesigned in time for this year's MotoGP event, with the sharp 'F1 corner' at the end of the back straight replaced by a more flowing layout similar to the original Turn 10, used until 2016.

Rookie Jorge Martin is back this weekend after missing the last three rounds due to multiple fractures in Portimao.

Marc Marquez is taking part in his fifth event since returning to MotoGP action, but continues to struggle with his right arm and shoulder.

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Catalunya MotoGP, Barcelona - Warm-up Results
PosRiderNatTeamTime/DiffLapMax (km/h)
1Takaaki NakagamiJPNLCR Honda (RC213V)1'39.783s6/11346k
2Maverick ViñalesSPAMonster Yamaha (YZR-M1)+0.036s6/10344k
3Franco MorbidelliITAPetronas Yamaha (YZR-M1)+0.067s6/12336k
4Johann ZarcoFRAPramac Ducati (GP21)+0.091s5/12348k
5Fabio QuartararoFRAMonster Yamaha (YZR-M1)+0.273s6/12342k
6Pol EspargaroSPARepsol Honda (RC213V)+0.359s5/12345k
7Francesco BagnaiaITADucati Team (GP21)+0.420s7/12350k
8Marc MarquezSPARepsol Honda (RC213V)+0.503s6/11346k
9Joan MirSPASuzuki Ecstar (GSX-RR)+0.528s5/11344k
10Valentino RossiITAPetronas Yamaha (YZR-M1)+0.567s5/12341k
11Danilo PetrucciITAKTM Tech3 (RC16)+0.653s5/11342k
12Enea BastianiniITAAvintia Ducati (GP19)*+0.858s5/12346k
13Jorge MartinSPAPramac Ducati (GP21)*+0.863s4/9347k
14Jack MillerAUSDucati Team (GP21)+0.870s9/12348k
15Miguel OliveiraPORRed Bull KTM (RC16)+0.880s9/12344k
16Iker LecuonaSPAKTM Tech3 (RC16)+0.946s7/12343k
17Brad BinderRSARed Bull KTM (RC16)+0.959s6/11346k
18Alex MarquezSPALCR Honda (RC213V)+0.998s4/11343k
19Luca MariniITASky VR46 Avintia Ducati (GP19)*+1.016s7/11343k
20Aleix EspargaroSPAAprilia Gresini (RS-GP)+1.287s7/12343k
21Lorenzo SavadoriITAAprilia Gresini (RS-GP)*+1.747s6/11340k

* Rookie.
Pole position time:
Fabio Quartararo FRA Yamaha 1m 38.853s

Former Catalunya MotoGP records:
Best lap:
Jorge Lorenzo SPA Ducati 1m 38.680s (2018)
Fastest race lap:
Jorge Lorenzo SPA Ducati 1m 40.021s (2018)

By Peter McLaren