Francesco Bagnaia has slipped back to 16th place, +1.2s, using the same hard and soft tyre selection as Marc Marquez.
Marquez meanwhile, runs off at Turn 1 after a moment on corner entry.
There we go.... VR46's Alessio Salucci confirms to Dorna's Jack Appleyard that Francesco Bagnaia had Franco Morbidelli's GP24 at the Misano MotoGP test.
Francesco Bagnaia has slipped back to 16th place, +1.2s, using the same hard and soft tyre selection as Marc Marquez.
Marquez meanwhile, runs off at Turn 1 after a moment on corner entry.
Replays show Maverick Vinales make a big leg-off save after losing the front of his KTM at high speed. Vinales is still recovering from his Sachsenring shoulder injury.
Marco Bezzecchi might still be sore from Motegi but he's enjoying a story start, closing to within 0.067s of Marc Marquez.
Pedro Acosta climbs to third for KTM, +0.297s.
A promising start for Honda, with all 4 riders still in the top ten.
Halfway through FP1 and it's still Marc Marquez from Johann Zarco and Jack Miller.
For reference, last year's Sprint saw most riders race with the hard front and soft rear tyres, then fit the medium rear for the grand prix.
15mins gone:
It's worth repeating that FP1 usually sees riders fitting tyres they don't expect to need for qualifying or the races; there's no point using up the 'best' tyre compounds on a dirty track.
A change at the top as Marc Marquez goes fastest, by 0.259s, on his 8th lap. Like Bezzecchi, he's using the hard front and medium rear tyres.
It's now an Aprilia one-two with Trackhouse rider Raul Fernandez putting the special Gulf livery into second behind Bezzecchi. Johann Zarco 3rd, Fabio Quartararo 4th, Alex Rins 5th.
Francesco Bagnaia is only 18th after 5 laps.
So far, it's Marco Bezzecchi fastest for Aprilia, ahead of Yamaha's Fabio Quartararo and Honda rookie Somkiat Chantra, now confirmed as moving to WorldSBK next season.
On track and Gresini's Fermin Aldeguer becomes the first faller of the weekend. A front-end accident at Turn 8. Rider OK.
Gigi Dall’Igna's cuts and scrapes are explained by Dorna's pit lane reporter Jack Appleyard, who says that Dall’Igna dived into the shallow end of a swimming pool earlier this week.
Tyre info from Michelin:“We have slightly adjusted the Medium compound at the front, while the Soft and Hard remain unchanged. We considered this modification necessary in light of the data collected last year.”
Ducati's Gigi Dall’Igna is filmed smiling in the pits - with some cuts and scrapes on his face! Perhaps the title celebrations were a bit too exuberant!
The green lights are on and FP1 begins.
Bagnaia said yesterday he won't touch his bike set-up until Saturday: "I'm quite confident, but I have to say that this track was never too easy for me. I already spoke to the team, and we decided to don't touch anything on the bike until Saturday, just to adapt to the situation."
One of the big questions for this morning will be if Francesco Bagnaia's revised GP25 (cough, GP24) parts can work at a third successive circuit, after the Misano test and a perfect double at Motegi last weekend.
Moto2 ends, with Vietti fastest from Gonzalez, MotoGP next.
Moto2 restarts, and should now end at 10:36am.
The Moto2 session is due to restart shortly, meaning there shouldn't be a delay to MotoGP FP1.
A partial power cut is reported to be the cause of the stoppage.
There are red flags with just under 12 minutes of Moto2 FP1 remaining, due to unspecified "technical issues".