Binder is back on top, but not for long - and it's Martin ahead again!
The first rider to hit the number one spot in this session is Brad Binder, swiftly dethroned by Jorge Martin.
The bikes are heading out for an hour on track, a timed session unlike the first these will count towards qualifying if there are any complications.
It's almost time for a return to track for the MotoGP class, will Alex Marquez double up to finish Friday top?
The MotoGP bikes are back on track in the afternoon for their second session of the day, at 2pm UK time.
Pedrosa is in seventh with the first track time of the weekend completed. You need to look further down the timesheets for Jorge Martin in ninth, with Francecso Bagnaia out of the top ten in twelfth.
There ware several personal bests on the final flying laps but very little change to the positions.
That leaves your FP1 leader as Alex Marquez, 0.507s ahead of his brother Marc, with Maverick Vinales completing the top three.
Aleix Espargaro is in a close fourth, with Franco Morbidelli fifth.
The chequered flag is out! Bagnaia is the first to see if he can make any headway and it's a personal best, but he remains 12th for Ducati.
The current top three : Alex Marquez, Marc Marquez and Vinales . The clock is heading close to zero so it's last chance to improve in the session .
A change at the top - Alex Marquez takes over with a much improved 1m36.630s as we head into the final minutes of the session.
There's another faller with Augusto Fernandez down at turn two!
The Marc Marquez lap of 1m 37.137s is still sitting pretty at the top as we head into the final ten minutes - that's still around a second off of Bagnaia's lap record at Jerez.
A much more purposeful lap from the 2023 Sunday race winner at Jerez sees Bagnaia move into the top ten from 16th.
That was not enough for Pedrosa, who immediately improves again for sixth!
Improvements incoming - Jorge Martin finally shows what he can do in Jerez as he moves up to fifth. Pedrosa is also heading in the right direction as he moves back to eighth.
Zarco is OFF! That was a fast fall at turn eight - the front folded on his LCR Honda.
Improvements for Franco Morbidelli see him move into third with just over twenty minutes left to run in FP1.
Rookie Pedro Acosta is working away in fifth. You need to look down the timesheets for championship leader Jorge Martin, in 14th and current MotoGP champion Francesco Bagnaia in 16th at the moment.
There's half an hour remaining and most riders are back in the pits, Marc Marquez still leads the way and has just improved. His brother Alex sits second, with Vinales completing the current top three.
Dani Pedrosa is once again setting competitive times - currently eighth but only 0.827s off the current best.
Times are dropping rapidly - Marc Marquez returns to the top with a 1m37s lap.
The laps are still coming in thick and fast and Marc Marquez takes over, only to be swiftly bettered by Vinales again and then Raul Fernandez, who currently holds the number one slot.
The first laps are in and after a few rapid changes at the top it is Maverick Vinales leading the way with a 1m 39.113s
The bike head down pitlane for FP1 and the weather is sunny and relatively cool - which could mean we see some fast lap times...
Maverick Vinales dominated the Texas round, so will be one to watch, can he do it again on home turf? We also have Dani Pedrosa back as a wildcard - he topped the first practice in Jerez last year!