Sprint at the Aragon MotoGP is scheduled to get underway at 15:00 local time.
Marc Marquez was fastest in Practice on Friday and took pole position this morning by 0.260 seconds ahead of his brother and chief title rival Alex Marquez.
Franco Morbidelli was able to make it an all-Ducati front row for this weekend's races, while Francesco Bagnaia qualified fourth ahead of Pedro Acosta and Brad Binder.
Yamaha struggled on Friday, but Fabio Quartararo was able to make it through Q1 to Q2 and ultimately qualified on the third row in ninth.
Silverstone winner Marco Bezzecchi crashed on his first flying lap of Q1 and had problems on his second bike, and could only qualify 20th, ahead only of Somkiat Chantra.
It's Sprint victory for Marc Marquez in Aragon. He wins by 2s over Alex Marquez, while Fermin Aldeguer completes the podium.
Morbidelli and Acosta round out the top-five, ahead of Di Giannantonio, Vinales, Bezzecchi, Binder, and Raul Fernandez who completes the top-10.
Bagnaia only 12th after starting fourth. Quartararo slumped to 11th in the end.
Marc Marquez visible struggling now for edge grip, like the rest of the soft runners, but he has 2s back to Alex Marquez and 4s back to Aldeguer who was only a tenth faster than the leader on the penultimate lap.
Augusto Fernandez has retired - technical issue, not a crash for the Yamaha wildcard.
Aldeguer up to third with three laps to go, he passes Morbidelli into turn four. That choice of medium rear tyre really paying off for the Spaniard.
Aldeguer on a bit of a charge. He's fourth at the moment, but he was 0.4s faster than Morbidelli on the last lap.
The soft tyre runners really dropping off at the moment, even Alex Marquez. Not Marc Marquez, though, it's probably worth noting.
Bezzecchi into the points now from 20th on the grid. He just passed Quartararo for ninth, who dropped a couple of positions when he ran wide at turn one. A bit of a salvage from Bezzecchi, though.
Marc Marquez already 0.8s ahead of Alex Marquez having been in the lead for only one lap. Quite astonishing pace.
A bit of a lunge from Marc Marquez at turn one of lap six, but he now leads. It was clean enough, but he did come from a decent way back.
Impressive, really, from Marquez, because he basically made up half-a-second on that lap five.
Just to go back to the front, Alex Marquez just set the fastest lap of the race on lap four. He's 0.5s clear of Marc Marquez.
Having been pressuring Morbidelli for third, Acosta is now back to fifth, passed by Aldeguer who jumped onto the back of the KTM rider when he ran wide at turn one.
Long lap penalty for Miller for causing a collision.
Bagnaia's race is getting worse. He just got out-braked by Vinales into turn 12. He's now ninth - where he finished in last year's Sprint after he spun off the start.
Morbidelli now coming under pressure at the beginning of lap three from Acosta.
Acosta tried to pass at turn one but ran wide and Morbidelli retook the position.
Contact between Miller and Mir at turn 12. Both go into the run off, and Mir falls in the gravel. He's out, Miller stays up and carries on.
Turn one, lap two and Marc Marquez up to second past Morbidelli.
Acosta was briefly third on the run into turn one, but he dropped to fourth afterwards, and remains there at the end of lap one.
Bagnaia made a poor start. He was passed around the outside by Quartararo at turn three, and he let Di Giannantonio through in the process at turn four.
It's lights out in Aragon and the MotoGP Sprint is underway.
Alex Marquez makes the holeshot from Morbidelli and Marc Marquez.
Riders are off on their warm-up lap ahead of the Sprint in Aragon.
So, just to confirm, both Marc Marquez and Fabio Quartararo, having looked initially to be going with the medium rear, are now both on the soft.
Aldeguer, Bastianini, both Pramac riders, and Di Giannantonio confirmed to be on medium rear tyres. Everyone else with the soft.
Davide Tardozzi also suggesting that both Ducati Lenovo Team riders will be on the soft rear tyre when speaking to the world feed. Says he expects everyone to be on the soft.
Everyone on the medium front, by the way.
