1pm and it's still Alex Marquez ruling the Buriram timesheets from Pedro Acosta, with Marc Marquez in third and Luca Marini the lead Honda in 4th.
The top 10 contains: 4 Ducatis, 2 KTMs, 2 Aprilias, 1 Honda and 1 Yamaha.
1pm and it's still Alex Marquez ruling the Buriram timesheets from Pedro Acosta, with Marc Marquez in third and Luca Marini the lead Honda in 4th.
The top 10 contains: 4 Ducatis, 2 KTMs, 2 Aprilias, 1 Honda and 1 Yamaha.
Early leader Marc Marquez sets his best time of the day so far to climb back to third, behind brother Alex and Acosta.
So it's currently a Ducati (Alex Marquez), from a KTM (Acosta), Honda (Marini) and Aprilia (Bezzechhi).
Jack Miller is now ahead of Quartararo to be the top Yamaha, in 9th, just behind Marc Marquez.
12:10pm and there's a change at the top, Sepang leader Alex Marquez puts his Gresini machine 0.255s clear of Acosta.
Luca Marini leapfrogs back into 3rd for Honda, with fellow VR46 Academy rider Francesco Bagnaia now the top factory Ducati team rider in 4th.
Franco Morbidelli puts the GP24 as the top Ducati again by taking over third behind Acosta and Bezzecchi. Brad Binder fourth and Marc Marquez now fifth.
Temperatures are now in the low 30s, which is still reasonable for Buriram. Temps should peak at 34 degrees in the early afternoon.
The same temperature range (low of 18 degrees at night, 34 degrees max in the day) is also expected tomorrow.
Fabio Quartararo makes a move. He's up to 5th place and top Yamaha, although +0.750s from Acosta.
The latest top 10: Acosta (top KTM), Bezzecchi (top Aprilia), Binder, M.Marquez (top Ducati), Ogura, Miller (top Yamaha), A.Marquez, Morbidelli, Zarco (top Honda), Marini.
Binder strikes back with P3, 0.266s behind team-mate Acosta. Bezzecchi is now splitting the KTMs.
Speaking of KTM, it's been a better start for new Tech3 riders Maverick Vinales and Enea Bastianini, who are 10th and 11th at present.
Acosta's factory team-mate Brad Binder is 16th.
Acosta is the only rider so far in the 1m 29s but there's still some way to go with the official pole record a 1m 28.700s by Francesco Bagnaia.
This is quite a run by Pedro Acosta, who improves yet again, but Bezzecchi also trims his best to stay 0.3s behind the KTM.
Marc Marquez returns to the track, just as he is bumped to third on the timesheets by Aprilia's Marco Bezzecchi.
Acosta isn't done, he sets four fastest sectors to pull 0.342s clear of Marquez on his next lap.
But KTM's Pedro Acosta does even better and topples Marquez from P1 by 0.132s on his 22nd lap of the day.
While we were sorting those photos, Trackhouse rookie Ai Ogura shot up to second place, 0.209s behind Marc Marquez.
A few photos from this morning at Buriram...
Jack Miller, 2025 Buriram test
Raul Fernandez back on track after hand surgery, Buriram test
Johann Zarco, Buriram test
Pedro Acosta pulls in, Buriram test
Marco Bezzecchi runs off track, Buriram test
Marc Marquez fastest after the opening hour at the Buriram test.
Alex Rins has put Yamaha into the top ten, in 9th, 0.997s behind Marc Marquez's Ducati.
Monster team-mate Fabio Quartararo is 13th, with Pramac riders Jack Miller and Miguel Oliveira 14th and 20th respectively.
Raul Fernandez continues to make up for lost time at Sepang, he's now in 11th place for Trackhouse, 1.044s behind Marc Marquez.
Marco Bezzecchi sets a personal best in sector 1, then the best of the morning in sector 2, but the lap time slips away and he remains second to Marquez.
Alex Marquez, fastest at November's Barcelona test and then last week at Sepang, rises to third place for Gresini. +0.448s from brother Marc.
Approaching the end of the opening hour and the top rider from each manufacturer is:
Marc Marquez (Ducati) 1st
Marco Bezzecchi (Aprilia) 2nd
Johann Zarco (Honda) 3rd
Pedro Acosta (KTM) 5th
Alex Rins (Yamaha) 11th
After the highs of Sepang, where the Yamaha riders had the benefit of the Shakedown, it's been a slower start for the M1s at Buriram. But let's see how they improve.